From Spreadsheet Flashcards

1
Q

The reading on the micrometer scale shown in figure “A” in the illustration is __________. GS-0093

A

C

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2
Q

The reading on the micrometer scale shown in figure “B” in the illustration is __________. GS-0093

A

C

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3
Q

The reading on the micrometer scale shown in figure “C” in the illustration is __________. GS-0093

A

D

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4
Q

Of the views labeled “1”, “2”, “3”, and “4”, select the one that correctly represents the right side view of the unnumbered object in the illustration. GS-0003

A

D

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5
Q

The top, front, and right side views of three different objects are shown in the illustration. In which object are all three views correct and complete? GS-0004

A

D

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6
Q

The barge shown in the illustration is 40’ X 20’ X 10’and weighs 22.9 long tons when empty. The theoretical maximum amount of machinery and cargo which may be installed or loaded is __________. GS-0157

A

205.6 long tons

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7
Q

What is the weight of the empty barge shown in the illustration if it is currently drawing one foot of salt water? Its length is 40’, width is 20’, and its height is 10’ . GS-0157

A

22.9 long tons

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8
Q

The barge shown in the illustration is 40’ X 20’ X 10’ (12.192 m X 6.096 m X 3.048 m ) and weighs 22.9 long tons (23.28 t) when empty. It has been loaded to a draft of 5 feet (1.524 m) in salt water. How many long tons of cargo have been added? GS-0157

A

91.4 long tons (92.91 t)

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9
Q

The barge shown in the illustration is 40’ X 20’ X 10’ (12.192 m X 6.096 m X 3.048 m) and weighs 22.9 long tons when empty. It has been loaded to a draft of 8 feet in salt water. How many long tons of cargo have been added? GS-0157

A

159.8 long tons

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10
Q

The barge shown in the illustration is 40’ X 20’ X 10’ and weighs 22.8 long tons when empty. What would be the maximum amount of cargo that may be loaded on the barge in salt water so that the maximum draft does not exceed 8 feet. GS-0157

A

160 long tons

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11
Q

Which drawing view or projection is shown in the illustration? GS-0001

A

cross-sectional

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12
Q

In the illustration shown, what is the distance indicated by dimension “I”? GS-0001

A

1 3/4 inches

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13
Q

In the illustration, line “C” is a __________. GS-0006

A

Dimension Line

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14
Q

In the illustration, line “J” is used to depict a _________? GS-0006

A

Cutting Plane Line

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15
Q

In the illustration, line “K” is a __________. GS-0006

A

Phantom Line

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16
Q

In the illustration, line “D” is a __________. GS-0006

A

Hidden Line

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17
Q

In the illustration, line “F” is a/an __________. GS-0006

A

Break Line

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18
Q

In the illustration, line “B” is a/an __________. GS-0006

A

Outline

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19
Q

In the illustration, line “D” is a/an __________. GS-0006

A

Hidden Line

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20
Q

The maximum diameter of the device illustrated is __________. GS-0008

A

1.749 inches

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21
Q

The physical feature indicated for each of the smallest diameter ends of the device illustrated is that they are __________. GS-0008

A

Threaded

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22
Q

Which of the following statements is correct regarding the device shown in the illustration? GS-0008

A

The areas dimensioned 0.64 in length are flats on the shaft.

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23
Q

The lathe tool shown as figure “B” in the illustration is called a __________. GS-0009

A

Round nose turning tool

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24
Q

Which single illustrated lathe tool could be used to turn down the stock in figure II? GS-0009

A

B

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25
Q

Which of the illustrated lathe tools would be used to produce figure V? GS-0009

A

E

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26
Q

Which of the illustrated lathe tools would be used to produce a smooth finish cut for figure I? GS-0009

A

A

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27
Q

The lathe tool shown as figure “A” in the illustration is called a __________. GS-0009

A

Left cut finishing tool

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28
Q

Which of the illustrated lathe tools would be used to produce a rough cut for figure I? GS-0009

A

F

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29
Q

Which of the listed illustrated figures represents the lathe tool used for facing figure VI? GS-0009

A

F

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30
Q

Which of the illustrated lathe tools would be used to produce a rough cut to the left for the stock in figure IV? GS-0009

A

F

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31
Q

Which of the listed illustrated figures represents the lathe tool used for facing figure VI? GS-0009

A

F

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32
Q

Which of the illustrated lathe tools would be used to produce a rough cut to the left for the stock in figure IV? GS-0009

A

F

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33
Q

Which of the following statements is true concerning the illustration shown? GS-0009

A

Figure F toolbit would be fed from right to left

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34
Q

Which of the illustrated lathe tools should be used to produce the groove in the stock in figure VII? GS-0009

A

G

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35
Q

The dimension of the sensing gap in the left hand limit sensor assembly shown in the illustration is __________. GS-0010

A

1/8 inch

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36
Q

The letters ‘NPT’ used in the notation 1/8-27 NPT as shown in the illustration, indicates the __________. GS-0010

A

Thread series

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37
Q

What is the distance between the center of the discharge outlet and the top of the motor illustrated? GS-0011

A

36 inches

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38
Q

What is the distance between the center of the discharge outlet and the top of the motor illustrated? GS-0011

A

36.000 inches

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39
Q

In the pump shown in the illustration, what is the distance from the bottom of the inlet to the bottom end of the motor shaft? GS-0011

A

57 5/8 inches

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40
Q

Which of the speeds listed represents the synchronous speed rating of the lube oil pump motor shown in the illustration? GS-0011

A

1,200 RPM

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41
Q

What is the length of the stud used to secure the packing gland shown in the illustration? GS-0012

A

2 1/2 inches

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42
Q

In the illustration shown, an efficient seal is maintained between the suction cover and the volute by __________. GS-0012

A

an asbestos gasket

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43
Q

How many cap screws are used to secure the motor bracket to the volute shown in the illustration? GS-0012

A

Four

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44
Q

The impeller shown in the illustration is best described as a/an __________. GS-0012

A

single suction closed impeller

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45
Q

The purpose of the wearing ring used in the illustrated pump is to __________. GS-0012

A

provide a replaceable wear surface for the pump housing

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46
Q

In the illustration, the item labeled as ‘30’ is __________. GS-0012

A

I only

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47
Q

In the illustration, the item labeled as ‘31’ is __________. GS-0012

A

II only

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48
Q

n the illustration, the item labeled as ‘27’ is __________. GS-0012

A

I only

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49
Q

The pump shown in the illustration can best be described as a centrifugal __________. GS-0012

A

single stage pump with a single suction closed impeller

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50
Q

The pump shown in the illustration is a __________. GS-0012

A

Centrifugal Pump

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51
Q

The suction nozzle classification of the pump shown in the illustration can best be described as __________. GS-0012

A

end suction

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52
Q

The reading on the micrometer scale shown in figure “C” in the illustration is __________. GS-0013

A

0.349 inch

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53
Q

The reading on the micrometer scale shown in figure “H” in the illustration is __________. GS-0013

A

0.438 inch

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54
Q

The reading on the micrometer scale shown in figure “E” in the illustration is __________. GS-0013

A

0.137 inch

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55
Q

The reading on the micrometer scale shown in figure “F” in the illustration is __________. GS-0013

A

0.148 inch

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56
Q

The reading on the micrometer scale shown in figure “I” in the illustration is __________. GS-0013

A

0.246 inch

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57
Q

A micrometer scale reading is indicated as 0.349 inches and is represented in the illustration by __________. GS-0013

A

figure C

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58
Q

A micrometer scale reading is indicated as 0.137 inches and is represented in the illustration by __________. GS-0013

A

Figure E

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59
Q

A micrometer scale reading is indicated as 0.148 inches and is represented in the illustration by __________. GS-0013

A

Figure F

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60
Q

A micrometer scale reading is indicated as 0.438 inches and is represented in the illustration by __________. GS-0013

A

figure H

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61
Q

In the illustration shown, what is the proper description of the hole represented by “C”? GS-0015

A

Counter Bored

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62
Q

Which of the listed types of machined ‘hole’ is represented by “B” as shown in the illustration? GS-0015

A

Counter drill

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63
Q

Which of the figures in illustration GS- 0080 would be used in conjunction with figure “C” in illustration GS-0015?

A

figure K

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64
Q

How many hidden lines are shown in the right side (end) view of the drawing illustrated? GS-0021

A

None

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65
Q

In the illustration, the reference to 3/4”R indicates that the __________. GS-0021

A

hole has a 3/4” radius

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66
Q

In the illustration, a hole is shown in the block. The shape of the hole is indicated as a __________. GS-0021

A

1.5 inch diameter fully bored hole

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67
Q

Which of the projections represents the left side view of the object “X” in the illustration? GS-0022

A

A

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68
Q

Dimension “X” indicated on the architects scale, shown in the illustration, will be equal to __________. GS-0023

A

5 feet 4 inches

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69
Q

The dimension indicated on the 1/2 inch architects scale, shown in the illustration, will be equal to __________. GS-0023

A

3 feet - 1.5 inches

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70
Q

The device shown in the illustration is used to __________. GS-0029

A

unload the cylinders of an air compressor

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71
Q

The primary function of the device illustrated is to __________. GS-0029

A

remove all but the frictional load of an air compressor at start up

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72
Q

A dimension line, as used in a drawing or blueprint, is represented by which of the figures shown in the illustration? GS-0031

A

C

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73
Q

A hidden line in a drawing, or blueprint is represented in the illustration by which of the labeled lines? GS-0031

A

D

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74
Q

In a schematic drawing, when an edge of a component is indicated as being located inside an enclosure, which line should be used? GS-0031

A

D

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75
Q

A ‘centerline’ depicted in a drawing or blueprint is represented by which of the figures shown in the illustration? GS-0031

A

E

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76
Q

The device shown in the illustration is known as a/an __________. GS-0032

A

spring centered directional control valve

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77
Q

If the operator releases the handle of the illustrated device while the system output is in motion, the valve will __________. GS-0032

A

return to its centered position and the output speed will drop to zero

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78
Q

Line “C” as shown in the illustration represents __________. GS-0033

A

the center of the items illustrated

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79
Q

In the illustration shown, which of the lines are considered as ‘visible lines’ in blueprint reading? GS-0033

A

The lines indicated by the letters “A” and “D”.

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80
Q

In the illustration shown, which pair of letters represent the same physical surface of the component? GS-0033

A

B and D

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81
Q

The function of the illustrated device is to __________. GS-0034

A

relieve compressed air from the intercooler after the compressor has cycled off

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82
Q

The device shown in the illustrated is known as a/an __________. GS-0035

A

three-position, detented, directional control valve

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83
Q

Regarding the device shown in the illustration, if the operator releases the handle while the system output is in motion, the __________. GS-0035

A

valve will remain in position with the output remaining unchanged

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84
Q

In the illustration shown, the last numeral in the notation 1/4-20 NC-2 indicates the __________. GS-0036

A

class of thread fit

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85
Q

In the figure shown in the illustration, the standard blueprint symbols above the letters “A”, “B”, and “C” indicate __________. GS-0036

A

the use of internal threads

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86
Q

A flat piece of sheet metal can be fastened to the device illustrated and would require the use of which listed type of fastener? GS-0036

A

Cap Screw

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87
Q

A flat piece of thin sheet metal fastened to the device illustrated, would most likely require the use of which listed type of fastener? GS-0036

A

round head machine screw

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88
Q

In the illustration shown, the letters “UNC” used in the notation “1/4-20 UNC- 2” indicates the __________. GS-0037

A

thread series

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89
Q

The type of thread illustrated is a/an __________. GS-0038

A

national coarse thread

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90
Q

The thread machined on the device illustrated is a/an __________. GS-0038

A

one inch, left-hand national coarse

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91
Q

In the thread notation shown in the illustration, the “1” preceding ‘8NC-LH’ represents __________. GS-0038

A

the outside diameter

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92
Q

The basic function of the servo control shown in the illustration, as used in some hydraulic systems, is to __________. GS-0039

A

position the tilt box of a variable displacement hydraulic pump for the desired output

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93
Q

If the device shown in the illustration is being used to control the output of an axial piston pump, when part “A” is moved to the right, then part “B” __________. GS-0039

A

will move to the left, and “C” will move to the right, but will lag behind the movement of “A”

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94
Q

If the device shown in the illustration is used to control the output of a variable displacement pump, and part “A” is displaced 50% from ‘zero’ stroke, which of the following statements will be correct? GS-0039

A

The pump would develop a 50% discharge rate and remain at that condition until the control handle position is changed.

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95
Q

Which of the following statements will be true if the position of the manual control lever, shown in the illustration, remains unchanged after the pump is placed on stroke? GS-0039

A

Although oil will leak past part ‘B,’ the amount of pump stroke will be maintained until the control handle position is changed.

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96
Q

In the device illustrated, if part “D” rotates clockwise then part “E” will rotate __________. GS-0040

A

counterclockwise and act upon part “G”

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97
Q

A variable displacement pump is fitted with the illustrated device, the discharge flow rate will be reduced as described by which of the following statements? GS-0040

A

Part “H” will move to block the replenishing pump oil flow across part “G” as flow across hydraulic motor decreases.

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98
Q

An axial piston hydraulic motor is caused to rotate by fluid flow from a comparably designed variable displacement pump fitted with the illustrated device. If the motor stalls, due to excess load, the pump tilting box will seek neutral stroke until the high side pressure equalizes or is less than the set point pressure established by part __________. GS-0040

A

I

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99
Q

If solenoid “A” illustrated is energized, the __________. GS-0041

A

cylinder should extend

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100
Q

If solenoid “B” illustrated is energized, the __________. GS-0041

A

Cylinder should retract

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101
Q

If solenoid “A” of the valve illustrated is energized, the cylinder will __________. GS-0041

A

extend with rate of movement uncontrolled

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102
Q

If solenoid “B” of the valve illustrated is energized, the cylinder will __________. GS-0041

A

retract with rate of movement controlled

103
Q

Which of the following components listed is shown in the illustration? GS-0041

A

Filter

104
Q

In the hydraulic schematic illustrated, the pump symbol indicates the use of a __________. GS-0041

A

constant flow pump of indefinite construction

105
Q

Which of the following is true concerning the hydraulic system illustrated? GS-0041

A

The piston rod will extend at a faster rate than it retracts.

106
Q

Which of the following is true concerning the hydraulic system illustrated? GS-0041

A

All of the above

107
Q

Which of the listed pumps, shown in the illustration, is fitted with a relief valve on its discharge side? GS-0042

A

General Service Pump

108
Q

All of the manifold valves shown in the illustration are __________. GS-0042

A

stop-check or stop valves

109
Q

The overboard discharge valves in the bilge system illustrated are __________. GS-0042

A

stop-check valves

110
Q

The bilge pump suction manifold, shown in the illustration, is provided with __________. GS-0042

A

four stop-check valves

111
Q

Which pump illustrated is fitted with a suction strainer? GS-0042

A

All of the above

112
Q

Which of the listed pumps, shown in the illustration, can be used to take suction on the forward, port, engine room bilge? GS-0042

A

Bilge Pump

113
Q

In order to take suction on the lube oil drain tank cofferdam with the bilge pump shown in the illustration, how many suction side valves must be open? GS-0042

A

Two

114
Q

In order for all of the bilge pump discharge to pass through the oily water separator, shown in the illustration, the oily water separator bypass valve must be __________. GS-0042

A

completely closed

115
Q

The general service pump is to be used to remove clean water from the No. 3 port double-bottom cofferdam and discharge it through the ballast overboard discharge. What are the minimum number of valves, shown in the illustration, that must be opened on both the suction and discharge to accomplish this task? GS-0042

A

Four

116
Q

The general service pump is to be used to remove clean water from the No. 4 port aft cargo hold and discharged through the ballast overboard. What are the minimum number of valves that must be opened on both the suction and discharge to accomplish this task? GS-0042

A

Six

117
Q

The illustrated control valve would be more suitable for __________. GS-0043

A

temperature control of a fluid being heated

118
Q

The valve shown in the illustration is typically used for temperature control of a liquid being heated. Which of the following changes to this unit would be useful in converting the valve for use in controlling the temperature of a cooling system? GS-0043

A

Exchange part “L” for one that is upward seated.

119
Q

With regards to the device shown in the illustration, the parts labeled “D” and “I” function together to __________. GS-0043

A

balance the steam supply pressure and cancel its affect on the valve disk

120
Q

In order to increase the set point of the control valve as illustrated, used to regulate the output temperature of a hot water heater, the part labeled __________. GS-0043

A

“A” must be rotated counterclockwise

121
Q

In order to increase the set point of the control valve as illustrated, used to regulate the output temperature of a refrigeration condenser, the part labeled __________. GS-0043

A

“A” must be rotated clockwise

122
Q

In order to decrease the set point of the control valve as illustrated, used to regulate the output temperature of a lube oil cooler, the part labeled __________. GS-0043

A

“A” must be rotated counterclockwise

123
Q

In order to decrease the set point of the control valve as illustrated, used to regulate the output temperature of a refrigeration condenser, the part labeled __________. GS-0043

A

“A” must be rotated counterclockwise

124
Q

If a leak occurs between the areas labeled “B” and “J” of the control valve shown in the illustration, which of the following problems is most likely to occur? GS-0043

A

The valve will open with an increase in temperature above the set point of the liquid being heated.

125
Q

In order for the reducing valve, shown in the illustration, to properly function, a control port is utilized between __________. GS-0044

A

the underside of diaphragm “E” and the outlet

126
Q

If you turn the hand-wheel clockwise of a spring-loaded, internal pilot, reducing valve, you will __________. GS-0044

A

compress the adjusting spring against the diaphragm

127
Q

In the spring-loaded, steam pressure, reducing valve shown in the illustration, if the downstream pressure falls below a preset value __________. GS-0044

A

all of the above

128
Q

In the spring-loaded, steam pressure, reducing valve shown in the illustration, if the downstream pressure falls below a preset value __________. GS-0044

A

acts to close the main valve “K”

129
Q

In the illustrated steam pressure reducing valve, the purpose of the item labeled “C” is to __________.

A

provide a supply conduit of actuating steam for the power piston

130
Q

In the illustration shown, the operating piston “H” in the valve has a larger surface area than the main valve disc to allow __________. GS-0044

A

control action to be accomplished with a relatively small amount of high pressure steam

131
Q

The valve shown in the illustration uses port “J” to __________. GS-0044

A

allow downstream pressure to be sensed by diaphragm “E”

132
Q

The position of the controlling diaphragm “E”, shown in the illustration of the spring-loaded reducing valve, is determined by the __________. GS-0044

A

downward force of the adjusting spring “F” and the upward force of the reduced steam pressure acting on diaphragm “E”

133
Q

In the spring-loaded pressure reducing valve illustrated, the auxiliary valve “D” is closed by __________. GS-0044

A

a spring

134
Q

In the spring-loaded pressure reducing valve illustrated, what would cause the auxiliary valve “D” to close? GS-0044

A

Raising adjusting screw “G”.

135
Q

Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. GS-0044

A

low pressure in the steam supply to the valve

136
Q

According to the illustration shown, which of the following statements is/are true? GS-0044

A

all of the above

137
Q

If the high pressure port became plugged in the spring-loaded, internal pilot, self-operated, steam pressure reducing valve illustrated, which of the following problems would probably occur? GS-0044

A

The opening of the auxiliary valve “D” would have no effect on the positioning of the piston ‘H.’

138
Q

Which of the problems listed will occur if diaphragm “E”, in the illustration shown, develops a significantly large hole? GS-0044

A

All of the above.

139
Q

The purpose of the vertical ‘grooves’ machined on the main valve “G”, in the spring loaded temperature regulating valve shown in the illustration, is to __________. GS-0045

A

provide for quieter valve operation

140
Q

With regards to process control, the operation of the device shown in the illustration can be characterized by the term __________. GS-0045

A

proportional plus reset control

141
Q

With regards to the steam regulating valve shown in the illustration, the maximum amount of steam pressure at the valve outlet is primarily determined by the __________. GS-0045

A

the adjusting screw “L”

142
Q

The outlet steam pressure operating range of the regulator shown in the illustration is manually adjusted by the part labeled ‘________.’ GS-0045

A

L

143
Q

If the controlled system temperature downstream of the valve shown in the illustration, decreases below the set point, which of the listed actions will occur? GS-0045

A

Spring “F” is compressed.

144
Q

In order to adjust the temperature set point of the temperature regulating valve illustrated, you should adjust the device indicated by the letter __________. GS-0045

A

B

145
Q

The dual pressure-temperature regulator, shown in the illustration, is adjusted by turning the stem “L” clockwise (as viewed from the top) and the adjusting ring “B” counterclockwise (as viewed from the top). This will result in __________. GS-0045

A

a higher outlet pressure, with a higher controlled fluid outlet temperature

146
Q

Which of the illustrations depicts the correct procedure for applying pipe dope? GS-0046

A

B

147
Q

The illustrated valve is recommended for use __________. GS-0047

A

as either fully opened or fully closed

148
Q

What type of valve is shown in the illustration? GS-0047

A

Gate valve

149
Q

What type of valve is shown in the illustration? GS-0047

A

Gate valve- rising gate

150
Q

Which of the following statements is true concerning the valve shown in the illustration. GS-0047

A

The valve is a non- rising stem design.

151
Q

The valve shown in the illustration is designed to seal against positive pressure leaks around the valve stem by the use of __________. GS-0047

A

adjustable packing gland

152
Q

Which of the following statements is correct concerning the operation of the bucket type steam trap shown? GS-0048

A

The valve is opened by the sinking bucket.

153
Q

The device illustrated is referred to as a/an __________. GS-0048

A

inverted bucket trap

154
Q

The function of the device illustrated is to __________. GS-0048

A

control condensate output from a heat exchanger

155
Q

The dashed line to the illustrated pump is the __________. GS-0049

A

casing drain

156
Q

Assuming valve “A” is correctly aligned in the no-flow position as shown with the system in operation, which of the following statements is true? GS-0049

A

Valve “D” would normally open before valve “B”.

157
Q

Valve “D” indicated in the illustration is referred to as a/an __________. GS-0049

A

unloading valve

158
Q

Referring to the device shown in the illustration, the port labeled “F” would be connected to __________. GS-0050

A

variable output pressure line to a regulating valve diaphragm

159
Q

Referring to the device shown in the illustration, if a reversed output were desired from a comparable unit as the system pressure increased, the necessary physical changes to the unit would be __________. GS-0050

A

the offsetting of the power head, or motor, and the use of a reversing lever

160
Q

In order to change the set point of the system using the illustrated device, you must __________. GS-0050

A

rotate part “D” in the direction necessary to produce the desired output pressure change in the system

161
Q

With regards to a direct acting air pilot relay shown in the illustration, an increase in pressure at “B” will cause the __________. GS-0050

A

operating air pressure at “F” to increase

162
Q

With regards to pilot controlled pneumatic regulating valves, the spring force of the regulating valve should be adjusted to __________. GS-0051

A

the operating range of the pilot output loading pressure

163
Q

Which of the following adjustments will cause the illustrated valve, to close at a lower loading pressure? GS-0051

A

Reducing the spring tension of item No. 6

164
Q

The power necessary to close the diaphragm control valve, as used in a pneumatic control system, is supplied by the __________. GS-0051

A

operating or loading pressure

165
Q

In a spring opposed, diaphragm-type, pneumatic power unit shown in the illustration, the force exerted on the spring is equal to the air pressure multiplied by the __________. GS-0051

A

area of the diaphragm

166
Q

Over tightening of the valve stem packing to a pneumatically controlled final control element, shown in the illustration, will cause __________. GS-0051

A

erratic operation

167
Q

The device shown in the illustration is typically designed to operate in conjunction with a pneumatically controlled valve in order to maintain __________. GS-0052

A

relatively constant liquid tank levels

168
Q

Referring to the device shown in the illustration, the coiled sensing lines “A” and “B”, are used simultaneously when the pilot is used __________. GS-0052

A

to maintain a tank level where there exists a variable vapor pressure atmosphere

169
Q

With regards to the diaphragm controlled, internally piloted, steam pressure reducing valve illustrated, as the __________. GS-0054

A

outlet pressure drops, the valve stem will move down

170
Q

Regarding the reducing valve shown in the illustration, the spring force generated as a result of compression from turning the hand wheel, is balanced by the __________. GS-0054

A

reduced pressure acting on the underside of the diaphragm

171
Q

The device illustrated is used as a __________. GS-0054

A

pressure reducing valve

172
Q

The valve depicted in the illustration shown is a __________. GS-0055

A

butterfly valve

173
Q

The valve illustrated is to be constructed so that the __________. GS-0055

A

operating lever is parallel to the flow when open and perpendicular to the flow when closed

174
Q

The illustrated valve is __________. GS-0055

A

quickly opened by moving the control lever by one-quarter of a turn

175
Q

The illustrated valve is known as a __________. GS-0056

A

swing check valve

176
Q

The device shown in the illustration is a __________. GS-0056

A

swing check valve

177
Q

Which of the following statements regarding the illustrated device is true? GS-0056

A

The valve disk alone can be removed for replacement or reconditioning.

178
Q

The discharge capacity of the axial piston hydraulic pump, shown in the illustration, is __________. GS-0058

A

fixed by the pump housing angle

179
Q

If the flow rate and pressure from a variable capacity pump was increased while supplying the device illustrated, the __________. GS-0058

A

horsepower, torque, and speed would increase proportionally

180
Q

The device illustrated would be best used as a __________. GS-0058

A

variable or constant speed motor

181
Q

Which of the following statements is true of the illustrated pump? GS-0061

A

It is a positive displacement air operated pump.

182
Q

The illustrated device is in operation when __________. GS-0061

A

suction of the transferred liquid occurs at “G” and discharge at “B”

183
Q

In the system illustrated, which of the following readings should be indicated on the pressure gage, if the load (x) is 8000 lbs (3632 kg) and the piston area (y) is 10 sq. in (64.5 sq. cm)? GS-0062

A

800 psi (56.31 kg/cm2)

184
Q

In the illustrated system, what pressure will be indicated on the gauge if the load (x) is 8000 lbs and the piston area is 10 sq. in? GS-0062

A

800 psi

185
Q

In the illustrated system, what pressure will be indicated on the gauge if the load (x) is 8000 lbs (3632 kg) and the piston area is 10 sq. in (64.5 sq. cm)? GS-0062

A

800 psi (56.31 kg/cm2)

186
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 8000 lbs (3632 kg) and the piston area (y) is 8 sq. in (51.6 sq. cm)? GS-0062

A

1,000 psi (70.3 kg.cm2)

187
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 10,000 lbs (4540 kg) and the piston area (y) is 8 sq. in (51.6 sq. cm)? GS-0062

A

1,250 psi (87.88 kg/cm2)

188
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 702.68 lbs (319.02 kg) and the piston area (y) is 1.117 sq. in (7.21 sq. cm)? GS-0062

A

629 psi (44.22 kg/cm2)

189
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 10,000 lb (4,450 kg) and the piston area (y) is 10 sq. in (64.5 sq cm.)? GS-0062

A

1,000 psi (70.30 kg/cm2)

190
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 9984 lbs (4532.7 kg) and the piston area is 12 sq. in (77.4 sq. cm)? GS-0062

A

832 psi (58.49 kg/cm2)

191
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 2,530 lbs (1,148.48 kg) and the area of the piston (y) is 38 sq. in (244.8 sq. cm)? GS-0062

A

66.66 psi (4.69 kg/cm2)

192
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 632 lb (286.9 kg) and the piston area (y) is 1.5 sq. in (9.6 sq. cm)? GS-0062

A

424 psi (29.81 kg/cm2)

193
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 758.7 lbs (344 kg) and the piston area (y) is 1.25 sq. in (8.0 sq. cm)? GS-0062

A

611 psi (42.95 kg/cm2)

194
Q

In the illustrated system, what pressure will be indicated on the gage if the load (x) is 500 lbs (227 kg) and the piston area (y) is 0.63 sq. in. (4 sq. cm.] GS-0062

A

796 psi (55.96 kg/cm2)

195
Q

Which of the listed illustrations correctly represents the installation of a hydraulic hose? GS-0063

A

A

196
Q

Figure “D” in the illustration is an improperly installed hose with a restriction developed at the __________. GS-0063

A

sharp bend formed at the left

197
Q

Figure “C” in the illustration, is an improperly installed hose, with the restriction developed at the __________. GS-0063

A

center of the hose

198
Q

Figure “B” in the illustration is improperly installed. A restriction will develop in this hose __________. GS-0063

A

trailing the direction of flow

199
Q

Which of the listed illustrations shows the INCORRECT method for installing hydraulic tubing? GS-0065

A

D

200
Q

The hydraulic tubing installation shown as figure “D” is INCORRECT and will probably leak when in operation because the tubing __________. GS-0065

A

and its fittings cannot be properly installed and tightened

201
Q

The hydraulic tubing installation shown as figure D in the illustration will probably leak when operating because the tubing __________. GS-0065

A

has no provision to compensate for strain due to expansion and contraction

202
Q

The illustrated device is normally used to __________. GS-0066

A

provide a remote reading of the liquid stored in the tank

203
Q

The illustrated device operates on the principle that the height of the column is __________. GS-0066

A

directly proportional to the pressure developed at D

204
Q

The illustrated device operates on the principle that the height of the liquid in gage “C” is __________. GS-0066

A

proportional to the height of the liquid, H

205
Q

The rudder torque capacity of the four ram steering gear illustrated, is rated at 44,210,000 inch-pounds with one power unit in operation. If the four ram system was able to be operated as a two ram system with both power units on line, what would be the available torque? GS-0067

A

22,105,000 inch pounds

206
Q

Which of the valve arrangements listed can be used to modify the four ram hydraulic steering gear system, shown in the illustration, to a working two ram system? GS-0067

A

Close valves ‘C2’, ‘C4’, and open valves ‘B2’, ‘B4’

207
Q

An arrow superimposed on a hydraulic graphic symbol at approximately 45°, as shown in the illustrated figures A, B, and C, indicates the component __________. GS-0068

A

can be adjusted or varied

208
Q

In hydraulics, the graphic symbol illustrated in Fig. A is used to represent a/an __________. GS-0068

A

spring

209
Q

The hydraulic graphic symbol illustrated as Fig. C is used to depict a/an __________. GS-0068

A

variable output, single direction flow pump

210
Q

The hydraulic graphic symbol illustrated in Fig. B is used to represent a/an __________. GS-0068

A

variable orifice

211
Q

According to the illustration shown, which of the following statements is/are true? GS-0044

A

all of the above

212
Q

The device shown in the illustration is used for what purpose? GS-RA-13

A

refrigeration compressor capacity control unloading mechanism

213
Q

The introduction of outside air to the air conditioning system is 90°F with a relative humidity of 60%. The air has been conditioned to 70°F with a relative humidity of 80%. Using the psychrometric chart, shown in the illustration, determine the quantity of moisture removed from one pound of the conditioned air. GS-RA-22

A

40 grains

214
Q

The introduction of outside air to the air conditioning system is 95°F with a relative humidity of 70%. The air has been conditioned to 75°F with a relative humidity of 90%. Using the psychrometric chart, shown in the illustration, determine the quantity of moisture removed from one pound of the conditioned air. GS-RA-22

A

60 grains

215
Q

The introduction of outside air to the air conditioning system is 95°F with a relative humidity of 70%. The air has been conditioned to 70°F with a relative humidity of 80%. Using the psychrometric chart, shown in the illustration, determine the quantity of moisture removed from one pound of the conditioned air. GS-RA-22

A

90 grains

216
Q

If outside air at 80 degrees F and 70 percent relative humidity is conditioned, what will be the resulting dew point temperature of the air just before it comes into contact with the cooling coil? GS-RA-22

A

70 degrees F

217
Q

What is the wet bulb temperature of air if the dry bulb temperature of the air is 90 degrees and the relative humidity is 65%? GS-RA-22

A

80 degrees F

218
Q

According to the data provided in the illustrated table, if the low side saturation temperature is maintained at 5°F and the high side saturation temperature is maintained at 86°F, what is the compression ratio of the system’s compressor? GS-RA-23

A

4.68 to 1

219
Q

According to the data provided in the illustrated table, if the low side saturation temperature is maintained at - 15°F and the high side saturation temperature is maintained at 100°F, what is the compression ratio of the system’s compressor? GS-RA-23

A

9.43 to 1

220
Q

In a simple saturated cycle, an R-134a refrigeration system has a high side pressure of 123.58 psig and a low side pressure of 1.9334 psig. Using this information and the data shown in the illustration, determine the refrigeration effect per pound of refrigerant circulated, neglecting any subcooling or superheating effects. GS-RA-23

A

55.41 BTU/lb

221
Q

In a simple saturated cycle, an R-134a refrigeration system has a high side pressure of 96.626 psig and a low side pressure of 9.0751 psig. Using this information and the data shown in the illustration, determine the refrigeration effect per pound of refrigerant circulated, neglecting any subcooling or superheating effects? GS-RA-23

A

62.33 BTU/lb

222
Q

Which of the following is true concerning the class “A” air conditioning system shown in the illustration as used to condition the air of large public spaces? GS-RA-09

A

The dry bulb room temperature is controlled by a steam heated reheater and its associated pneumatic control valve.

223
Q

The steam heated preheater and its associated pneumatic control valve are controlled by what device in the class “A” air conditioning system shown in the illustration as used condition the air of large public spaces? GS-RA-09

A

duct thermostat

224
Q

Which of the following is true concerning the class “D” terminal reheat air conditioning system shown in the illustration as used to condition the air of individual staterooms? GS-RA-42

A

The dry bulb room temperature is controlled by a hot water heated reheater and its associated pneumatic control valve

225
Q

Which of the following is true concerning the class “D” air conditioning system shown in the following illustration? GS-RA-42

A

The duct thermostat determines the amount of water flow circulating through the cooling coil.

226
Q

Which of the following is true concerning the class “G” dual duct air conditioning system shown in the illustration as used to condition the air of individual staterooms? GS-RA-43

A

The dry bulb room temperature is controlled by a dual duct air mixing unit.

227
Q

Which of the following is true concerning the class “G” air conditioning system shown in the following illustration? GS-RA-43

A

The room thermostat controls the degree of mixing of the cold and hot air at the dual duct air mixing unit.

228
Q

In consulting the R-134a pressure- temperature chart shown in the illustration, what would be the most likely normal running suction pressure for a reach-in chill box, assuming the box temperature is within normal range? GS-RA-11

A

22.1 psig

229
Q

In consulting the R-134a pressure- temperature chart shown in the illustration, what would be the most likely normal running suction pressure for a reach-in freezer, assuming the box temperature is within normal range? GS-RA-11

A

2.0 psig

230
Q

In consulting the R-134a pressure- temperature chart shown in the illustration, what would be the most likely normal running suction pressure for an air conditioner, assuming the space temperature is within normal range? GS-RA-11

A

35.1 psig

231
Q

The set point adjustment of the device shown in the illustration is made by rotating what component? GS-RA-14

A

“2”

232
Q

If it is necessary to increase the operating head pressure of the refrigeration system using the device shown in the illustration, what should be done? GS-RA-14

A

“2” should be turned to further compress the spring

233
Q

In a refrigeration system, the valve shown in the illustration is used for what purpose? GS-RA-14

A

head pressure regulating valve

234
Q

In addition to the indicated gauge pressure, what other information is presented on the compound gauge for the hypothetical refrigerant illustrated? GS-RA-16

A

the saturation temperature of the refrigerant that corresponds to the gauge pressure at the point of measurement

235
Q

The coil temperature measured at the expansion valve sensing bulb of an operating system is 10°F. The low side pressure with the compressor running as shown on the gauge illustrated indicates 15 psig. What adjustments or changes, if any, should be made to the system? GS-RA-16

A

The expansion valve should not be adjusted, as the degree of superheat is within the accepted range.

236
Q

Which of the listed statements describes the method used to determine the amount of superheat present in the suction gas leaving the evaporator coil? GS-RA-16

A

Note the low side pressure, determine the corresponding saturation temperature, and subtract it from the temperature measured with a thermometer at the thermostatic expansion valve sensing bulb.

237
Q

What is the purpose of the discharge pressure regulating valve as shown in the illustration? GS-RA-17

A

it prevents the head pressure from becoming too low during low ambient temperature conditions

238
Q

What is the purpose of the quench valve as shown in the illustration? GS-RA-17

A

it injects liquid into the suction line during low load conditions

239
Q

What statement is true concerning the host and remote evaporators of the illustrated refrigerated container unit piping diagram? GS-RA-17

A

the host and remote evaporators are associated with a divided container unit with two boxes maintained at different temperatures, each containing its own evaporator

240
Q

What is the purpose of the pressure transducer as shown in the illustration? GS-RA-17

A

it senses compressor suction pressure and controls the quench valve

241
Q

Pertaining to the illustrated refrigerated container unit piping diagram, if the current box temperature is considerably above set point, to achieve a quicker pulldown in box temperature, what would be the status of the economizer and unloading solenoid valves? GS-RA-18

A

economizer solenoid valve: open unloading solenoid valve: closed

242
Q

Pertaining to the illustrated refrigerated container unit piping diagram, if the current box temperature is above, but fairly close to set point and the ambient temperature is relatively high, what would be the status of the economizer and unloading solenoid valves? GS-RA-18

A

economizer solenoid valve: closed unloading solenoid valve: closed

243
Q

Pertaining to the illustrated refrigerated container unit piping diagram, if the current box temperature is above, but fairly close to set point and the ambient temperature is relatively low, what would be the status of the economizer and unloading solenoid valves? GS-RA-18

A

economizer solenoid valve: closed unloading solenoid valve: open

244
Q

Which of the following electrically operated refrigeration system valves would be most appropriate for use as a liquid line solenoid valve? GS-RA-19

A

A

245
Q

Which of the following electrically operated refrigeration system valves would be most appropriate for use as a 2 position diverting hot gas bypass solenoid valve? GS-RA-19

A

B

246
Q

Which of the following electrically operated refrigeration system valves would be most appropriate for use as a reverse-cycle solenoid valve? GS-RA-19

A

C

247
Q

Which of the following electrically operated refrigeration system valves would be most appropriate for use as an electronic expansion valve? GS-RA-19

A

D

248
Q

In consulting the refrigerant pressure- enthalpy and mechanical refrigeration system diagrams shown in the illustration, in the direction of refrigerant flow, what letters in the pressure- enthalpy diagram correspond to points 5 and 6 on the refrigeration cycle diagram? GS-RA-21

A

A to B

249
Q

In consulting the refrigerant pressure- enthalpy and mechanical refrigeration system diagrams shown in the illustration, in the direction of refrigerant flow, what letters in the pressure- enthalpy diagram correspond to points 7 and 8 on the refrigeration cycle diagram? GS-RA-21

A

B to D

250
Q

In consulting the refrigerant pressure- enthalpy and mechanical refrigeration system diagrams shown in the illustration, in the direction of refrigerant flow, what letters in the pressure- enthalpy diagram correspond to points 9 and 1 on the refrigeration cycle diagram? GS-RA-19

A

E to F

251
Q

In consulting the refrigerant pressure- enthalpy and mechanical refrigeration system diagrams shown in the illustration, in the direction of refrigerant flow, what letters in the pressure- enthalpy diagram correspond to points 2 and 3 on the refrigeration cycle diagram? GS-RA-19

A

G to J

252
Q

Which of the following illustrated expansion valves is designed to maintain a constant evaporator pressure rather than a constant evaporator superheat? GS-RA-24

A

C

253
Q

Which of the following illustrated expansion valves senses evaporator superheat by the use of thermistor probes? GS-RA-24

A

A

254
Q

Which of the following illustrated expansion valves would be most suitable for use in variable capacity systems rated at 50 tons of refrigeration and over? GS-RA-24

A

B