From Spreadsheet Flashcards
The reading on the micrometer scale shown in figure “A” in the illustration is __________. GS-0093
C
The reading on the micrometer scale shown in figure “B” in the illustration is __________. GS-0093
C
The reading on the micrometer scale shown in figure “C” in the illustration is __________. GS-0093
D
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
D
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
D
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
205.6 long tons
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
22.9 long tons
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
91.4 long tons (92.91 t)
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
159.8 long tons
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
160 long tons
Which drawing view or projection is shown in the illustration? GS-0001
cross-sectional
In the illustration shown, what is the distance indicated by dimension “I”? GS-0001
1 3/4 inches
In the illustration, line “C” is a __________. GS-0006
Dimension Line
In the illustration, line “J” is used to depict a _________? GS-0006
Cutting Plane Line
In the illustration, line “K” is a __________. GS-0006
Phantom Line
In the illustration, line “D” is a __________. GS-0006
Hidden Line
In the illustration, line “F” is a/an __________. GS-0006
Break Line
In the illustration, line “B” is a/an __________. GS-0006
Outline
In the illustration, line “D” is a/an __________. GS-0006
Hidden Line
The maximum diameter of the device illustrated is __________. GS-0008
1.749 inches
The physical feature indicated for each of the smallest diameter ends of the device illustrated is that they are __________. GS-0008
Threaded
Which of the following statements is correct regarding the device shown in the illustration? GS-0008
The areas dimensioned 0.64 in length are flats on the shaft.
The lathe tool shown as figure “B” in the illustration is called a __________. GS-0009
Round nose turning tool
Which single illustrated lathe tool could be used to turn down the stock in figure II? GS-0009
B
Which of the illustrated lathe tools would be used to produce figure V? GS-0009
E
Which of the illustrated lathe tools would be used to produce a smooth finish cut for figure I? GS-0009
A
The lathe tool shown as figure “A” in the illustration is called a __________. GS-0009
Left cut finishing tool
Which of the illustrated lathe tools would be used to produce a rough cut for figure I? GS-0009
F
Which of the listed illustrated figures represents the lathe tool used for facing figure VI? GS-0009
F
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
F
Which of the listed illustrated figures represents the lathe tool used for facing figure VI? GS-0009
F
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
F
Which of the following statements is true concerning the illustration shown? GS-0009
Figure F toolbit would be fed from right to left
Which of the illustrated lathe tools should be used to produce the groove in the stock in figure VII? GS-0009
G
The dimension of the sensing gap in the left hand limit sensor assembly shown in the illustration is __________. GS-0010
1/8 inch
The letters ‘NPT’ used in the notation 1/8-27 NPT as shown in the illustration, indicates the __________. GS-0010
Thread series
What is the distance between the center of the discharge outlet and the top of the motor illustrated? GS-0011
36 inches
What is the distance between the center of the discharge outlet and the top of the motor illustrated? GS-0011
36.000 inches
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
57 5/8 inches
Which of the speeds listed represents the synchronous speed rating of the lube oil pump motor shown in the illustration? GS-0011
1,200 RPM
What is the length of the stud used to secure the packing gland shown in the illustration? GS-0012
2 1/2 inches
In the illustration shown, an efficient seal is maintained between the suction cover and the volute by __________. GS-0012
an asbestos gasket
How many cap screws are used to secure the motor bracket to the volute shown in the illustration? GS-0012
Four
The impeller shown in the illustration is best described as a/an __________. GS-0012
single suction closed impeller
The purpose of the wearing ring used in the illustrated pump is to __________. GS-0012
provide a replaceable wear surface for the pump housing
In the illustration, the item labeled as ‘30’ is __________. GS-0012
I only
In the illustration, the item labeled as ‘31’ is __________. GS-0012
II only
n the illustration, the item labeled as ‘27’ is __________. GS-0012
I only
The pump shown in the illustration can best be described as a centrifugal __________. GS-0012
single stage pump with a single suction closed impeller
The pump shown in the illustration is a __________. GS-0012
Centrifugal Pump
The suction nozzle classification of the pump shown in the illustration can best be described as __________. GS-0012
end suction
The reading on the micrometer scale shown in figure “C” in the illustration is __________. GS-0013
0.349 inch
The reading on the micrometer scale shown in figure “H” in the illustration is __________. GS-0013
0.438 inch
The reading on the micrometer scale shown in figure “E” in the illustration is __________. GS-0013
0.137 inch
The reading on the micrometer scale shown in figure “F” in the illustration is __________. GS-0013
0.148 inch
The reading on the micrometer scale shown in figure “I” in the illustration is __________. GS-0013
0.246 inch
A micrometer scale reading is indicated as 0.349 inches and is represented in the illustration by __________. GS-0013
figure C
A micrometer scale reading is indicated as 0.137 inches and is represented in the illustration by __________. GS-0013
Figure E
A micrometer scale reading is indicated as 0.148 inches and is represented in the illustration by __________. GS-0013
Figure F
A micrometer scale reading is indicated as 0.438 inches and is represented in the illustration by __________. GS-0013
figure H
In the illustration shown, what is the proper description of the hole represented by “C”? GS-0015
Counter Bored
Which of the listed types of machined ‘hole’ is represented by “B” as shown in the illustration? GS-0015
Counter drill
Which of the figures in illustration GS- 0080 would be used in conjunction with figure “C” in illustration GS-0015?
figure K
How many hidden lines are shown in the right side (end) view of the drawing illustrated? GS-0021
None
In the illustration, the reference to 3/4”R indicates that the __________. GS-0021
hole has a 3/4” radius
In the illustration, a hole is shown in the block. The shape of the hole is indicated as a __________. GS-0021
1.5 inch diameter fully bored hole
Which of the projections represents the left side view of the object “X” in the illustration? GS-0022
A
Dimension “X” indicated on the architects scale, shown in the illustration, will be equal to __________. GS-0023
5 feet 4 inches
The dimension indicated on the 1/2 inch architects scale, shown in the illustration, will be equal to __________. GS-0023
3 feet - 1.5 inches
The device shown in the illustration is used to __________. GS-0029
unload the cylinders of an air compressor
The primary function of the device illustrated is to __________. GS-0029
remove all but the frictional load of an air compressor at start up
A dimension line, as used in a drawing or blueprint, is represented by which of the figures shown in the illustration? GS-0031
C
A hidden line in a drawing, or blueprint is represented in the illustration by which of the labeled lines? GS-0031
D
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
D
A ‘centerline’ depicted in a drawing or blueprint is represented by which of the figures shown in the illustration? GS-0031
E
The device shown in the illustration is known as a/an __________. GS-0032
spring centered directional control valve
If the operator releases the handle of the illustrated device while the system output is in motion, the valve will __________. GS-0032
return to its centered position and the output speed will drop to zero
Line “C” as shown in the illustration represents __________. GS-0033
the center of the items illustrated
In the illustration shown, which of the lines are considered as ‘visible lines’ in blueprint reading? GS-0033
The lines indicated by the letters “A” and “D”.
In the illustration shown, which pair of letters represent the same physical surface of the component? GS-0033
B and D
The function of the illustrated device is to __________. GS-0034
relieve compressed air from the intercooler after the compressor has cycled off
The device shown in the illustrated is known as a/an __________. GS-0035
three-position, detented, directional control valve
Regarding the device shown in the illustration, if the operator releases the handle while the system output is in motion, the __________. GS-0035
valve will remain in position with the output remaining unchanged
In the illustration shown, the last numeral in the notation 1/4-20 NC-2 indicates the __________. GS-0036
class of thread fit
In the figure shown in the illustration, the standard blueprint symbols above the letters “A”, “B”, and “C” indicate __________. GS-0036
the use of internal threads
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
Cap Screw
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
round head machine screw
In the illustration shown, the letters “UNC” used in the notation “1/4-20 UNC- 2” indicates the __________. GS-0037
thread series
The type of thread illustrated is a/an __________. GS-0038
national coarse thread
The thread machined on the device illustrated is a/an __________. GS-0038
one inch, left-hand national coarse
In the thread notation shown in the illustration, the “1” preceding ‘8NC-LH’ represents __________. GS-0038
the outside diameter
The basic function of the servo control shown in the illustration, as used in some hydraulic systems, is to __________. GS-0039
position the tilt box of a variable displacement hydraulic pump for the desired output
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
will move to the left, and “C” will move to the right, but will lag behind the movement of “A”
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
The pump would develop a 50% discharge rate and remain at that condition until the control handle position is changed.
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
Although oil will leak past part ‘B,’ the amount of pump stroke will be maintained until the control handle position is changed.
In the device illustrated, if part “D” rotates clockwise then part “E” will rotate __________. GS-0040
counterclockwise and act upon part “G”
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
Part “H” will move to block the replenishing pump oil flow across part “G” as flow across hydraulic motor decreases.
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
I
If solenoid “A” illustrated is energized, the __________. GS-0041
cylinder should extend
If solenoid “B” illustrated is energized, the __________. GS-0041
Cylinder should retract
If solenoid “A” of the valve illustrated is energized, the cylinder will __________. GS-0041
extend with rate of movement uncontrolled
If solenoid “B” of the valve illustrated is energized, the cylinder will __________. GS-0041
retract with rate of movement controlled
Which of the following components listed is shown in the illustration? GS-0041
Filter
In the hydraulic schematic illustrated, the pump symbol indicates the use of a __________. GS-0041
constant flow pump of indefinite construction
Which of the following is true concerning the hydraulic system illustrated? GS-0041
The piston rod will extend at a faster rate than it retracts.
Which of the following is true concerning the hydraulic system illustrated? GS-0041
All of the above
Which of the listed pumps, shown in the illustration, is fitted with a relief valve on its discharge side? GS-0042
General Service Pump
All of the manifold valves shown in the illustration are __________. GS-0042
stop-check or stop valves
The overboard discharge valves in the bilge system illustrated are __________. GS-0042
stop-check valves
The bilge pump suction manifold, shown in the illustration, is provided with __________. GS-0042
four stop-check valves
Which pump illustrated is fitted with a suction strainer? GS-0042
All of the above
Which of the listed pumps, shown in the illustration, can be used to take suction on the forward, port, engine room bilge? GS-0042
Bilge Pump
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
Two
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
completely closed
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
Four
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
Six
The illustrated control valve would be more suitable for __________. GS-0043
temperature control of a fluid being heated
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
Exchange part “L” for one that is upward seated.
With regards to the device shown in the illustration, the parts labeled “D” and “I” function together to __________. GS-0043
balance the steam supply pressure and cancel its affect on the valve disk
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” must be rotated counterclockwise
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” must be rotated clockwise
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” must be rotated counterclockwise
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” must be rotated counterclockwise
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
The valve will open with an increase in temperature above the set point of the liquid being heated.
In order for the reducing valve, shown in the illustration, to properly function, a control port is utilized between __________. GS-0044
the underside of diaphragm “E” and the outlet
If you turn the hand-wheel clockwise of a spring-loaded, internal pilot, reducing valve, you will __________. GS-0044
compress the adjusting spring against the diaphragm
In the spring-loaded, steam pressure, reducing valve shown in the illustration, if the downstream pressure falls below a preset value __________. GS-0044
all of the above
In the spring-loaded, steam pressure, reducing valve shown in the illustration, if the downstream pressure falls below a preset value __________. GS-0044
acts to close the main valve “K”
In the illustrated steam pressure reducing valve, the purpose of the item labeled “C” is to __________.
provide a supply conduit of actuating steam for the power piston
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
control action to be accomplished with a relatively small amount of high pressure steam
The valve shown in the illustration uses port “J” to __________. GS-0044
allow downstream pressure to be sensed by diaphragm “E”
The position of the controlling diaphragm “E”, shown in the illustration of the spring-loaded reducing valve, is determined by the __________. GS-0044
downward force of the adjusting spring “F” and the upward force of the reduced steam pressure acting on diaphragm “E”
In the spring-loaded pressure reducing valve illustrated, the auxiliary valve “D” is closed by __________. GS-0044
a spring
In the spring-loaded pressure reducing valve illustrated, what would cause the auxiliary valve “D” to close? GS-0044
Raising adjusting screw “G”.
Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. GS-0044
low pressure in the steam supply to the valve
According to the illustration shown, which of the following statements is/are true? GS-0044
all of the above
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
The opening of the auxiliary valve “D” would have no effect on the positioning of the piston ‘H.’
Which of the problems listed will occur if diaphragm “E”, in the illustration shown, develops a significantly large hole? GS-0044
All of the above.
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
provide for quieter valve operation
With regards to process control, the operation of the device shown in the illustration can be characterized by the term __________. GS-0045
proportional plus reset control
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
the adjusting screw “L”
The outlet steam pressure operating range of the regulator shown in the illustration is manually adjusted by the part labeled ‘________.’ GS-0045
L
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
Spring “F” is compressed.
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
B
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 higher outlet pressure, with a higher controlled fluid outlet temperature
Which of the illustrations depicts the correct procedure for applying pipe dope? GS-0046
B
The illustrated valve is recommended for use __________. GS-0047
as either fully opened or fully closed
What type of valve is shown in the illustration? GS-0047
Gate valve
What type of valve is shown in the illustration? GS-0047
Gate valve- rising gate
Which of the following statements is true concerning the valve shown in the illustration. GS-0047
The valve is a non- rising stem design.
The valve shown in the illustration is designed to seal against positive pressure leaks around the valve stem by the use of __________. GS-0047
adjustable packing gland
Which of the following statements is correct concerning the operation of the bucket type steam trap shown? GS-0048
The valve is opened by the sinking bucket.
The device illustrated is referred to as a/an __________. GS-0048
inverted bucket trap
The function of the device illustrated is to __________. GS-0048
control condensate output from a heat exchanger
The dashed line to the illustrated pump is the __________. GS-0049
casing drain
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
Valve “D” would normally open before valve “B”.
Valve “D” indicated in the illustration is referred to as a/an __________. GS-0049
unloading valve
Referring to the device shown in the illustration, the port labeled “F” would be connected to __________. GS-0050
variable output pressure line to a regulating valve diaphragm
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
the offsetting of the power head, or motor, and the use of a reversing lever
In order to change the set point of the system using the illustrated device, you must __________. GS-0050
rotate part “D” in the direction necessary to produce the desired output pressure change in the system
With regards to a direct acting air pilot relay shown in the illustration, an increase in pressure at “B” will cause the __________. GS-0050
operating air pressure at “F” to increase
With regards to pilot controlled pneumatic regulating valves, the spring force of the regulating valve should be adjusted to __________. GS-0051
the operating range of the pilot output loading pressure
Which of the following adjustments will cause the illustrated valve, to close at a lower loading pressure? GS-0051
Reducing the spring tension of item No. 6
The power necessary to close the diaphragm control valve, as used in a pneumatic control system, is supplied by the __________. GS-0051
operating or loading pressure
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
area of the diaphragm
Over tightening of the valve stem packing to a pneumatically controlled final control element, shown in the illustration, will cause __________. GS-0051
erratic operation
The device shown in the illustration is typically designed to operate in conjunction with a pneumatically controlled valve in order to maintain __________. GS-0052
relatively constant liquid tank levels
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
to maintain a tank level where there exists a variable vapor pressure atmosphere
With regards to the diaphragm controlled, internally piloted, steam pressure reducing valve illustrated, as the __________. GS-0054
outlet pressure drops, the valve stem will move down
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
reduced pressure acting on the underside of the diaphragm
The device illustrated is used as a __________. GS-0054
pressure reducing valve
The valve depicted in the illustration shown is a __________. GS-0055
butterfly valve
The valve illustrated is to be constructed so that the __________. GS-0055
operating lever is parallel to the flow when open and perpendicular to the flow when closed
The illustrated valve is __________. GS-0055
quickly opened by moving the control lever by one-quarter of a turn
The illustrated valve is known as a __________. GS-0056
swing check valve
The device shown in the illustration is a __________. GS-0056
swing check valve
Which of the following statements regarding the illustrated device is true? GS-0056
The valve disk alone can be removed for replacement or reconditioning.
The discharge capacity of the axial piston hydraulic pump, shown in the illustration, is __________. GS-0058
fixed by the pump housing angle
If the flow rate and pressure from a variable capacity pump was increased while supplying the device illustrated, the __________. GS-0058
horsepower, torque, and speed would increase proportionally
The device illustrated would be best used as a __________. GS-0058
variable or constant speed motor
Which of the following statements is true of the illustrated pump? GS-0061
It is a positive displacement air operated pump.
The illustrated device is in operation when __________. GS-0061
suction of the transferred liquid occurs at “G” and discharge at “B”
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
800 psi (56.31 kg/cm2)
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
800 psi
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
800 psi (56.31 kg/cm2)
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
1,000 psi (70.3 kg.cm2)
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
1,250 psi (87.88 kg/cm2)
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
629 psi (44.22 kg/cm2)
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
1,000 psi (70.30 kg/cm2)
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
832 psi (58.49 kg/cm2)
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
66.66 psi (4.69 kg/cm2)
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
424 psi (29.81 kg/cm2)
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
611 psi (42.95 kg/cm2)
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
796 psi (55.96 kg/cm2)
Which of the listed illustrations correctly represents the installation of a hydraulic hose? GS-0063
A
Figure “D” in the illustration is an improperly installed hose with a restriction developed at the __________. GS-0063
sharp bend formed at the left
Figure “C” in the illustration, is an improperly installed hose, with the restriction developed at the __________. GS-0063
center of the hose
Figure “B” in the illustration is improperly installed. A restriction will develop in this hose __________. GS-0063
trailing the direction of flow
Which of the listed illustrations shows the INCORRECT method for installing hydraulic tubing? GS-0065
D
The hydraulic tubing installation shown as figure “D” is INCORRECT and will probably leak when in operation because the tubing __________. GS-0065
and its fittings cannot be properly installed and tightened
The hydraulic tubing installation shown as figure D in the illustration will probably leak when operating because the tubing __________. GS-0065
has no provision to compensate for strain due to expansion and contraction
The illustrated device is normally used to __________. GS-0066
provide a remote reading of the liquid stored in the tank
The illustrated device operates on the principle that the height of the column is __________. GS-0066
directly proportional to the pressure developed at D
The illustrated device operates on the principle that the height of the liquid in gage “C” is __________. GS-0066
proportional to the height of the liquid, H
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
22,105,000 inch pounds
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
Close valves ‘C2’, ‘C4’, and open valves ‘B2’, ‘B4’
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
can be adjusted or varied
In hydraulics, the graphic symbol illustrated in Fig. A is used to represent a/an __________. GS-0068
spring
The hydraulic graphic symbol illustrated as Fig. C is used to depict a/an __________. GS-0068
variable output, single direction flow pump
The hydraulic graphic symbol illustrated in Fig. B is used to represent a/an __________. GS-0068
variable orifice
According to the illustration shown, which of the following statements is/are true? GS-0044
all of the above
The device shown in the illustration is used for what purpose? GS-RA-13
refrigeration compressor capacity control unloading mechanism
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
40 grains
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
60 grains
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
90 grains
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
70 degrees F
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
80 degrees F
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
4.68 to 1
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
9.43 to 1
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
55.41 BTU/lb
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
62.33 BTU/lb
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
The dry bulb room temperature is controlled by a steam heated reheater and its associated pneumatic control valve.
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
duct thermostat
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
The dry bulb room temperature is controlled by a hot water heated reheater and its associated pneumatic control valve
Which of the following is true concerning the class “D” air conditioning system shown in the following illustration? GS-RA-42
The duct thermostat determines the amount of water flow circulating through the cooling coil.
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
The dry bulb room temperature is controlled by a dual duct air mixing unit.
Which of the following is true concerning the class “G” air conditioning system shown in the following illustration? GS-RA-43
The room thermostat controls the degree of mixing of the cold and hot air at the dual duct air mixing unit.
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
22.1 psig
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
2.0 psig
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
35.1 psig
The set point adjustment of the device shown in the illustration is made by rotating what component? GS-RA-14
“2”
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
“2” should be turned to further compress the spring
In a refrigeration system, the valve shown in the illustration is used for what purpose? GS-RA-14
head pressure regulating valve
In addition to the indicated gauge pressure, what other information is presented on the compound gauge for the hypothetical refrigerant illustrated? GS-RA-16
the saturation temperature of the refrigerant that corresponds to the gauge pressure at the point of measurement
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
The expansion valve should not be adjusted, as the degree of superheat is within the accepted range.
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
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.
What is the purpose of the discharge pressure regulating valve as shown in the illustration? GS-RA-17
it prevents the head pressure from becoming too low during low ambient temperature conditions
What is the purpose of the quench valve as shown in the illustration? GS-RA-17
it injects liquid into the suction line during low load conditions
What statement is true concerning the host and remote evaporators of the illustrated refrigerated container unit piping diagram? GS-RA-17
the host and remote evaporators are associated with a divided container unit with two boxes maintained at different temperatures, each containing its own evaporator
What is the purpose of the pressure transducer as shown in the illustration? GS-RA-17
it senses compressor suction pressure and controls the quench valve
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
economizer solenoid valve: open unloading solenoid valve: closed
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
economizer solenoid valve: closed unloading solenoid valve: closed
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
economizer solenoid valve: closed unloading solenoid valve: open
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
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
B
Which of the following electrically operated refrigeration system valves would be most appropriate for use as a reverse-cycle solenoid valve? GS-RA-19
C
Which of the following electrically operated refrigeration system valves would be most appropriate for use as an electronic expansion valve? GS-RA-19
D
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 to B
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
B to D
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
E to F
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
G to J
Which of the following illustrated expansion valves is designed to maintain a constant evaporator pressure rather than a constant evaporator superheat? GS-RA-24
C
Which of the following illustrated expansion valves senses evaporator superheat by the use of thermistor probes? GS-RA-24
A
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
B
