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4th Six Months > Home Studies > Flashcards

Home Studies Flashcards

1
Q

What designates the overall size of the sheet on which the drawing is to be made.

A

Letter

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2
Q

2

A

2

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3
Q

3

A

3

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4
Q

4

A

4

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5
Q

A cut surface is shown with

A

Slanted Crosshatch Lines

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6
Q

6

A

6

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7
Q

7

A

7

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8
Q

Which thread class fits the loosest?

A

Class 1

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9
Q

If the symbol is __________ the arrow, it means the part should be welded on the arrow side. If the joint symbol is __________ the arrow, it means the part should be welded on the other side.

A

Below

Above

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10
Q

A grooved pulley with V shaped belts is called a?

A

Sheave

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11
Q

It serves as a base for mounting the tool holder on a lathe

A

Compound rest

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12
Q

What view shows all the parts in a mechanism separated from one another?

A

Exploded View

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13
Q

The lower part of a compound rest is called a?

A

Swivel

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14
Q

The upper part of a compound rest is called a?

A

Rest top

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15
Q

An orthographic projection compresses everything into a?

A

Two-dimensional plane

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16
Q

In gear trains, to avoid confusion, the drafter can draw the gear shafts as though they were all positioned in a?

A

Singular plane

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17
Q

A duct labeled 12”x20” means?

A

Width is 12”

Depth is 20”

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18
Q

Cross section of supply duct

A

Box w an X in the middle

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19
Q

A __________ hides and protects the open end of the duct, and it directs the air and spreads it evenly into the spaces

A

Diffuser

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20
Q

19

A

19

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21
Q

The method of developing a cone, a pyramid, or any other shape that has a constant taper, requires drawing a __________ _________ from a single point

A

Radius Line

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22
Q

21

A

21

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23
Q

Most plat gives bearing in terms of?

A

Magnetic north

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24
Q

Layout that shows the arrangement of different pieces of machinery, offices, and storerooms?

A

Floor Plan Layout

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25
Q

23

A

23

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26
Q

Drawings of the framework, floors, and foundations of a plant are called?

A

Structural Drawings

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27
Q

Flow Diagrams are used when a material or product flow pattern is required. It can be either floor plans or?

A

Elevation Drawings

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28
Q

__________ __________ states that in any fluid-liquid or gas - the pressure at any point acts equally in all directions

A

Pascals Law

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29
Q

If equal pressure is applied on both the rod and blank side of a piston, the total force will be greater on the __________ side.

A

Blank

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30
Q

28

A

28

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31
Q

29

A

29

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32
Q

30

A

30

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33
Q

Galvanized iron pipes have __________ __________ and are often joined by threading the ends and screwing the sections together.

A

Threaded Joints

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34
Q

The __________ forces the two sections of pipe together tighter and tighter as you assemble the joint, making the joint strong and water tight.

A

Taper

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35
Q

__________ joints are used in large diameter industrial piping that carries fluids under pressure or at high temperatures

A

Flanged

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36
Q

When two different metals make electrical contact with each other, an electro-chemical reaction can occur. This reaction is called a?

A

Galvanic reaction

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37
Q

When __________ corrodes, the corrosion forms a tight coating that keeps oxygen from reaching the layers of _________!and iron underneath

A

Zinc

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38
Q

36

A

Symbol for a fuse

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39
Q

Current is measured in units called?

A

Amperes

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40
Q

The __________ are made of wire wrapped around the core

A

Windings

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41
Q

A __________ __________ shows you the loads served by each circuit.

A

Circuit Diagram

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42
Q

A _________ plan shows all the electrical distribution to all the plant buildings.

A

Plot

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43
Q

If it is always a liquid, or always a gas, the fluid is called a _________. If it changes back and forth, it is called a _________.

A

Coolant

Refrigerant

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44
Q

This valve holds the refrigerant on one side at a higher pressure than on the other side

A

Expansion valve

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45
Q

An indirect system uses a _________ _________ that cools the air

A

Heat exchanger

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46
Q

Pneumatic controls operate on?

A

Low pressure air

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47
Q

Refrigerant piping drawing are usually?

A

Single line drawings

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48
Q

A good sketch is one that?

A

Communicates clearly

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49
Q

A _________ sketch shows an object in three dimensions.

A

Pictorial

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50
Q

The name __________ means “equal measure”. In an __________ sketch, the scale of the drawing is not reduced for points farther from the viewer.

A

Isometric

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51
Q

In a __________ view, parts farther from the front appear smaller then parts near the front

A

Perspective

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52
Q

In reality, parallel lines __________ meet

A

Never

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53
Q

A schematic is made up of?

A

Symbols and lines

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54
Q

Double line drawings that show the internal details of a pneumatic system are called?

A

Cutaway drawings

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55
Q

In a DC circuit, the electrons flow from?

A

One direction only

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56
Q

Arrows are used on piping diagrams to indicate?

A

Direction of flow

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57
Q

In a piping system, an alternate flow path is indicated by a

A

Supplementary diagram

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58
Q

On an electrical diagram, a dashed line indicates?

A

Exposed wire

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59
Q

Vent lines and drain lines are shown on a hydraulic schematic by?

A

Dashed lines

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60
Q

If a schematic carries no legend, clues about it may be found in the parts list, drawing title and

A

Engineers notes

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61
Q

Circle w an arrow represents a?

A

Gauge

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62
Q

What is the last step in troubleshooting an electrical circuit when using a schematic?

A

Examine the actual circuit

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63
Q

Which electrical symbol represents connecting wires?

A

Crossed wires w a dot

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64
Q

Symbol for SPDT switch

A

. ./ .

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65
Q

Symbol for transformer

A

) ll (
) ll (
) ll (

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66
Q

Electrical symbol for fuse

A

-[ ]-

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67
Q

Electrical symbol show NC contacts

A

l
=\
l

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68
Q

An electric circuit in which the current path goes from one load to the next is called a?

A

Series circuit

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69
Q

An electric circuit that allows each load to be turned on and off independently of the others is called a?

A

Parallel circuit

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70
Q

A wiring diagram shows how the parts of a circuit are connected?

A

Externally

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71
Q

Wired labeled “L” on a schematic?

A

Carry power from the source

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72
Q

The forward button is marked?

A

FOR

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73
Q

The flow of material in a piping system is controlled and adjusted by?

A

Valves

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74
Q

Symbol for flanged joint?

A

-l l-

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75
Q

Direction of flow in a piping system can be changed by a?

A

Elbow

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76
Q

What part of a piping system connect pipes of different diameters?

A

Reducer

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77
Q

Symbol for screwed tee fitting

A

l
l
-

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78
Q

A valve is used to __________ in a piping system

A

Control the flow

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79
Q

A cock valve is used to?

A

Turn flow on or off quickly

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80
Q

Symbol for a globe valve

A

> o

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81
Q

A check valve

A

Allows flow in only one direction

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82
Q

30

A

30

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83
Q

Both hydraulic and pneumatic systems are?

A

Fluid power systems

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84
Q

In a fluid power system, the ________ reacts to the pressure of the fluid and does the work

A

Actuator

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85
Q

Symbol for a receiver in a pneumatic system

A

(===)

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86
Q

The basic symbol for a valve shows its connections, flow path and

A

Functions

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87
Q

Symbol for valve in a closed position

A

Blocked DCV ports

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88
Q

Symbol for electric motor

A

Circle w M in the middle

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89
Q

Which element of a hydraulic braking system directs the flow of the brake fluid?

A

Valve

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90
Q

If the fluid in a hydraulic or pneumatic system is used again and again it is called a?

A

Closed system

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91
Q

On a hydraulic or pneumatic diagram, local areas are outlined by what?

A
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92
Q

Symbol for a push button

A

Square w a dot in the middle

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93
Q

In a refrigeration subsystem of an A/C and R system, what is another term for an evaporator?

A

Liquid Chiller

94
Q

Symbol for a rotary compressor

A

Circle w a square on top

95
Q

In an A/C and R system, thermostatic expansion valves and ADR valves are used on?

A

Direct control

96
Q

In a diagram for an electric control circuit, which shows wiring to be installed on site?

A
97
Q

What solid state device in an AC system can amplify and switch electrical signals?

A

Transistor

98
Q

Fusion welding means joining two materials by?

A

Melting them together

99
Q

The basic method of fusion welding that uses the squeeze and heat process is?

A

Resistance welding

100
Q

Symbol for weld w chamfering

A

Tilted V

101
Q

If the part is to be welded in the field, the weld symbol will include a?

A

Flag

102
Q

Standard dimensions for a weld

A

May appear in a legend on a welding diagram

103
Q

What is the principle operation of the fly ball?

A

It is to maintain a constant speed or load on a unit

104
Q

At what speed does the governor allow the brakes to be applied on a generator?

A

At 50% speed or less

105
Q

What is the purpose of the speed drop mechanism on an Allis-Chalmers unit?

A

Cause the hydraulic turbine to divide the load between generators in the desired proportions

106
Q

What is the principle part of the Kaplan Control mechanism?

A

A regulating valve with valve actuator and pilot valve

107
Q

What is the permanent generator designed to give?

A

Mounted vertically on top of the main generator it is designed to give long service with minimal attention

108
Q

What is the normal open circuit voltage of the permanent Magnet Generator on a Pelton Governor?

A

240V at 600rpm

160V at 400rpm

109
Q

When should the vibrators on a Woodward Governor be replaced?

A

A. The rotation of the governor head does not keep the fly ball rod moving with a minute up and down motion
B. It appears that the high points are wearing off the vibrators
C. The ball race tracks begin to pit

110
Q

What is the purpose of the dashpot on an Allis-Chalmers governor?

A

To prevent the flyball from over correcting

111
Q

A hydraulic turbin governor must maintain a balance between the?

A

Water input to the turbines and the power requirements on the system

112
Q

Governor settings and responses must take in to consideration?

A
  1. Allowable loading of transmission lines and maximum loading of the lines between systems
  2. Hydraulic characteristics of the penstock and turbine
  3. the flywheel affect of the rotating mass of the generator and turbine
113
Q

Any change in the position of the flyballs is transmitted to the pilot valve by the?

A

Speeder rod

114
Q

The compensating dashpot is inserted in the

A

Restoring mechanism linkage

115
Q

The compensating dashpot serves to prevent over travel or hunting of the gates by recentering the

A

pilot valve

116
Q

The rate at which the smaller plunger of the compensating dashpot returns to normal is usually determined by the setting of the?

A

Needle valve

117
Q

The adjustment provided in the speed adjusting linkage to cause the governor to add speed adjustment in the lower direction as the gates open wider is called the?

A

Speed drop adjustment

118
Q

The governors of units designated to regulate system frequency will generally have speed drop settings closer to?

A

0%

119
Q

An isochronous governor is one that has?

A

Zero speed droop

120
Q

Governor safety devices usually serve to?

A

A. Close the gates if turbine speed exceeds a predetermined value
B. Close the gates if governor oil pressure is lost
C. Control or prevent water hammer damage by opening auxiliary nozzles if the main nozzle closes too rapidly.

121
Q

What is the weight of a 36 ft American Standard I beam designated S15 x 42.9? Use W=w/ft x L

A

W=w/ft x L

42.9 x 36ft = 1544.4 lb

122
Q

If a sling leg is attached to a suspended load at an angle of less than 90*, the horizontal force acting on the sling leg?

A

Increases as the sling angle gets smaller

123
Q

If both ends of the sling are attached to the hoist hook and a load is suspended from the center of the sling, what hitch is being used?

A

Basket

124
Q

Which of the following hooks has a point designed to fit into a hole in the load?

A

Sorting hook

125
Q

A hook should be removed from service if?

A

The tip is twisted more than 10% out of line

126
Q

If the strands of a wire rope appear to spiral down to the right, and if the wires in the strands appear to be parallel to the rope axis, the wire rope is

A

Right regular lay

127
Q

If a wire rope is classified as 6 x 37, the figure 37 means that

A

Each strand of the rope contains a nominal 37 wires.

128
Q

The following factors all affect wire rope strength In which one is the D/d ratio important?

A

Bending over a curved surface

129
Q

Which of these wire rope end fittings is the most efficient?

A

Speltered socket

130
Q

If a rigger finds that a wire rope sling is kinked, he should

A

Remove it from service

131
Q

Which of the following identifications would be most likely to appear on the links of a chain suitable for overhead lifting?

A

800

132
Q

The specification for welded link chain that corresponds to a wire ropes rated load is called the chains

A

Working load limit

133
Q

If an alloy steel chain has been subjected to temperatures over 1000(540C)

A

It should be removed from service

134
Q

The is a slot in one of the ends of a standard link fittings for metal mesh slings. It allows the sling to be used in a __________ hitch

A

Choker

135
Q

You should recommend removing a metal mesh screen from service if

A

One welded joint at the edge of the sling is broken

136
Q

The strongest and most popular of the synthetic fiber ropes is

A

Nylon

137
Q

Tho avoid sharp bending and abrasion, the eye of a fiber rope sling should include a

A

Thimble

138
Q

A fiber rope swing should be removed from service if it

A

Shows kinking

139
Q

The rated load, or capacity of an encased polyester sling is indicated by the

A

Color of the cover

140
Q

You should remove a synthetic web sling from service if

A

If it is scorched

141
Q

A pocket wheel is part of an

A

Overhead manual chain hoist

142
Q

The purpose of an upper limit switch is to

A

Keep the load block from raising dangerously high

143
Q

The difference between top-running and under hung cranes lies in

A

How the end trucks of the bridge beam are supported

144
Q

When a rigger lifts a load a few inches, then stops to see if the load drifts downward, what is he checking?

A

Lower limits switch

145
Q

Wire rope should be removed from hoist service if the rigger finds

A

Two broken wires at a socketed end fitting

146
Q

In a crane operation involving several people

A

The operator must respond to a “STOP” signal from anyone

147
Q

You should not use metal mesh slings if

A

If the spirals do not move freely

148
Q

When working with floor operated hoists and cranes, you should make sure that the

A

Obstructions can be cleared by the moving load

149
Q

One edge of the load serves as a pivot during _________ turning

A

One hook

150
Q

When shoulda blocks or other holding devices be placed at the locations where a load will be set

A

Before the load is lifted

151
Q

The height of a movable sectional metal scaffold that measures 4 x 8 ft at the base, should not exceed ________ ft

A

16

152
Q

A hydraulic scissor lift of the larger type can safely support ___________ workers and their equipment

A

2

153
Q

Each worker on a suspended scaffold must wear a safety belt connected to a lifeline that is attached to

A

The structure being worked on

154
Q

When you secure a scaffold with guy wires, what accessories do you use to tighten the wires to the correct tension?

A

Turnbuckles

155
Q

A wooden ladder must not be coated with

A

Paint

156
Q

Before new equipment arrives at the plant, plans for installing it are made by?

A

Plant engineer

157
Q

When pouring a concrete footing, you should hold the steel rods in position with?

A

Tie wires

158
Q

The best materials for filling around a foundation are gravel and

A

ground concrete slabs

159
Q

The type of bolt to anchor the equipment is usually specified by the

A

Equipment manufacturer

160
Q

How long must new concrete sit before you install concrete on it?

A

28 days

161
Q

Retainers on the side of horizontally reciprocating equipment keep it from?

A

Walking

162
Q

To isolate anchor bolts when mounting equipment on pads, surround the bolts with

A

Neoprene tubing

163
Q

What type of wrench should you use to tighten anchor bolts?

A

Torque

164
Q

To drill anchor bolts larger than 1-1/2”, you should use a?

A

Core bit with diamond or carbide tip

165
Q

You should not use a concrete mix to grout anchor bolts, because the concrete

A

Shrinks when it sets

166
Q

If new equipment is damaged in shipment, you should report it to the

A

Carrier

167
Q

What must you do first before disconnecting the electric wiring to existing equipment?

A

Shit off the power

168
Q

What is the least number of rollers you should use under a load on a skid?

A

Three

169
Q

When moving equipment with a crowbar, what should you use between the bar and the floor?

A

Wood block

170
Q

If you have no clearance to remove a sling after setting the equipment down, you should lower the equipment on to

A

Wedges

171
Q

To keep your body heat from affecting a master precision level, you should handle it by its

A

Non heat conductive top plate

172
Q

To support a level on an inverted V shaped way, use a precision

A

V block

173
Q

To support a level across machine tool ways in different planes, you should use precision ground parallels or

A

Gauge blocks

174
Q

The common dial indicator is usually used w a _________ base

A

Magnetic

175
Q

When an alignment screw is finally set, you can prevent further movement by

A

Applying a sealing compound

176
Q

The external air lines on equipment usually terminate just beyond a filter or a

A

Regulator

177
Q

If the fluid in a system is thick, you can control it with a ________ check valve

A

Ball

178
Q

You can keep the fluid pressure in a line near a preset level with a ________ valve

A

Regulating

179
Q

A copy of the manufacturers test date is often attached to the _______ of new equipment

A

Manual

180
Q

High temperatures during equipment startup is usually caused by

A

Poor lubrication

181
Q

A right angle adapter can be added to a drill for drilling

A

In close quarters

182
Q

The shank of a drill bit is held in the

A

Chuck

183
Q

If you are drilling a hole all the way through a work piece, you should ease up on the pressure when the bit

A

Nears the other side

184
Q

You should use a jig when

A

Drilling at an angle

185
Q

You can prevent electric shocks from power tools by

A

Grounding them

186
Q

A carbide tipped core bit is used for drilling holes _________ in diameter

A

Between 1-1/2”- 3-1/2” in

187
Q

When drilling with a diamond aggregate core bit, you must use a special rotary hammer and a

A

Stand

188
Q

Which of the following is useful in maintaining the proper pressure and drilling speed when using an electric hammer

A

Ammeter

189
Q

When using an electric hammer, always wear

A

Safety glasses

190
Q

What should never be removed from a three prong plug?

A

Grounding prong

191
Q

The size of a pneumatic drill is determined by the

A

Largest bit the chuck will hold

192
Q

You should use a depth gauge when drilling

A

Blind holes

193
Q

The removal of thin layers of metal or rust from a surface is an example of

A

Scaling

194
Q

When you use a pneumatic hammer, a flat blade chisel is best for

A

General chipping work

195
Q

You can flush the pneumatic tool w kerosene when the tool

A

Operates sluggishly

196
Q

The speed of a power screwdrivers spindle at no load is called the tools

A

Free speed

197
Q

Electric nutrunners operate at no-load speeds of

A

0-2500rpm

198
Q

The positive drive clutch mechanism remains engaged as long as you press the

A

Bit on to the fastener

199
Q

For pneumatic tools, a filter is installed at the end of the air line to remove

A

Water

200
Q

On pneumatic tools, the air hose should be at least one size larger than the

A

Air inlet

201
Q

A saber saw cuts on the

A

Upstroke

202
Q

In regular set saw blades, the taker is the

A

Straight tooth

203
Q

A circular saw is best for

A

Long, straight cuts

204
Q

The blade motion of a reciprocating saw is

A

Back and forth in line w the motor

205
Q

Which saw cuts on the backstroke

A

Reciprocating saw

206
Q

The size of a circular saw equals the

A

Diameter of the blade

207
Q

The rip blade has

A

Teeth w a chisel shape

208
Q

A rip guide limits the width of the cut to about

A

6 in

209
Q

A diamond grit wheel

A

Must be supplied with water

210
Q

A saw protractor has a movable arm which can be set in small increments up to

A

180*

211
Q

Advancing a router too fast cause

A

Scoring

212
Q

A wide channel cut in a material is called a

A

Dado

213
Q

Examples of template routing include

A

Hinge-butt mortises

214
Q

The drawing below shows a ________

A

Rabbet

215
Q

When planing a large surface, you should

A

Work down the entire surface evenly

216
Q

The width of the sanding belt determines

A

The size of the sander

217
Q

The motion of an orbital sander is

A

Circular

218
Q

A pad sander is used with

A

Abrasive paper

219
Q

Do not use a pad sander for

A

Removing paint and varnish

220
Q

Open coat, 17-24-30 sanding disks are best for

A

Removing paint and smoothing surface irregularities

221
Q

Which symbol in the marking code on a Grinding wheel indicates the bond grade

A

Third

222
Q

The maximum safe speed for a grinding wheel with a silicate bond is

A

6500sfm

223
Q

Pneumatic grinders often fail because of

A

Improper lubrication

224
Q

How often should grease fitting in a pneumatic grinder be greased?

A

After 40 hours of use

225
Q

A nibbler is rated according to

A

The thickest gauge of steel it can cut

226
Q

A loaded whetstone is

A

Jammed with metal and abrasive particles

227
Q

Which part of a whetstone should be used for sharpening a pointed tool

A

Sides only

228
Q

A power tool with an abrasive wheel is called a

A

Bench grinder

229
Q

When sharpening a drill bit, you should hold the bit at an angle of _________ to the face of the grinding wheel

A

59*

230
Q

When sharpening readers, taps and dies, you should avoid grinding or whetting the

A

Tops of the lands

4th Six Months (1 decks)

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