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4th Six Month > Final > Flashcards

Final Flashcards

1
Q

On a schematic, drawing, a triangle is used to represent all of the following electrical connections, except a amplifier, diode, ground, or a motor

A

A triangle does not represent a motor

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2
Q

Unlike a DC schematic, a schematic of AC circuit has no

A

Positive or negative signs

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3
Q

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

A

Supplementary diagram

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4
Q

Arrows are used on piping diagrams to indicate the

A

Direction of flow

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5
Q

DC circuit electrons flow from

A

One Direction only

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6
Q

On a electrical diagram, a dashed line indicates a

A

Exposed wire

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7
Q

The one way flow symbol shown below is from an _______ type schematics
—-<|—— (diode)

A

Electrical

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8
Q

The symbol displayed represents a
🧭

A

Gauge

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9
Q

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

A

Dashed lines

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10
Q

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

A

Engineers notes

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11
Q

Which displayed electrical symbol represents a single pole double throw switch

A

0—-
—0 /
0—-

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12
Q

A device that uses electricity is called a

A

Load

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13
Q

Which displayed electrical symbol represents a fuse

A

——▪️◻️▪️◻️◻️▪️◻️▪️———

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14
Q

Which displayed electrical symbol shows NC contacts

A

🖱️
➖
/
T

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15
Q

Both a fuse and a circuit breaker

A

Open a circuit when there is a current overload

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16
Q

What type of diagram emphasizes connections between the elements rather than flow?

A

Wiring

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17
Q

When several wires follow the same path, they may be represented as a ______ line on a wiring diagram

A

Thick

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18
Q

In electrical circuit in which the current path goes from one load to the next load is called a _______ circuit

A

Series

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19
Q

The schematic symbol shown below represents ______ contact

A

Normally open relay

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20
Q

In the displayed diagram the forward button is marked

A

FOR

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21
Q

The flow of material in piping systems is controlled and adjusted by

A

Valves

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22
Q

Which type of projection gives a right angle view of a piping system

A

Orthographic

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23
Q

One disadvantage of a welded joint is that it?

A

May form slag inside the pipe

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24
Q

Direction to flow in a piping system may be changed by a

A

Elbow

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25
Q

Which displayed symbol represents a screwed T fitting

A

+
I+
+

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26
Q

A cock valve is used to

A

Turn flow on or off quickly

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27
Q

A valve is used to ___________ in a piping system

A

Control flow

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28
Q

Which kind of valve can be used to regulate the flow of fluid?

A

Globe

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29
Q

A check valve

A

Allows flow in One Direction

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30
Q

Which displayed symbol represents a globe valve

A

> o<

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31
Q

Which element in a hydraulic system keeps a vacuum from forming when the liquid level drops

A

Reservoir

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32
Q

The symbol is shown below represents a

A

Fixed displacement compressor

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33
Q

When equal force must be available in both directions________ cylinder must be used

A

Double end

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34
Q

Another name for a _______ wave valve is a multiple position valve

A

Four

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35
Q

Which displayed symbol represents a valve in the normally closed position

A
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36
Q

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

A

Valve assembly

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37
Q

A composite symbol is created by combining______ symbol into a single symbol

A

Basic

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38
Q

A schematic diagram may be broken into local area areas to

A

Make the circuits easier to understand

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39
Q

Which of the symbols indicates a solenoid operated valve

A

The rectangle with a diagonal line going from corner to corner

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40
Q

The symbol below represents a _______ accumulator

A

Gas charged

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41
Q

The refrigeration accessory symbol shown below represents a

A

Line filter

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42
Q

NAAC and refrigeration system txv and adr valves are used on ____ control

A

Direct

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43
Q

On a refrigeration schematic, the following symbol indicates a switch that operates on
0/0
I
n
-

A

Rising pressure

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44
Q

In a diagram for electric control circuit, which of the following shows wiring to be installed at the site

A

Dash lines

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45
Q

What solid-state device can in a AC system can amplify and switch electrical signals

A

Transistor

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46
Q

Welding is classified by the

A

Method of producing heat

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47
Q

Standard dimensions for a weld

A

Always appear on the legend

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48
Q

What is the principle part of the Kaplan control mechanism?

A

The principle part of this mechanism is a regulating valve with valve actuator and pilot

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49
Q

What is the permanent magnet generator designed to give?

A

A long service with a minimum amount of attention

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50
Q

For a Pelton governor, the normal open circuit voltage of the permanent magnet generator is

A

240 V at 600 RPM and 160 V at 400 RPM

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51
Q

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

A

From 50% speed to less than 50%

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52
Q

Vibrators on a Woodward governor should be replaced when

A

Rotation doesn’t keep up high points are worn pitting in place of the track, all of the above

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53
Q

What is the purpose of the speed droop mechanism on an Alice Chalmers unit

A

To divide the load between generators in the desired proportions

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54
Q

What is the purpose of the dash pot on the Alice Chalmers governor?

A

To prevent the flyball from over correcting

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55
Q

A hydraulic turbine governor must maintain a balance between the

A

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

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56
Q

Governor settings in responses must take into consideration

A

Allowable loading of transmission lines, maximum loading of the tie lines between systems, hydraulic characteristics of the penstock and turbine, flywheel effect of the rotating mass of the turbine and generator

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57
Q

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

A

Speeder rod

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58
Q

The rate at which the smaller plunger of the compensating dash pot returns to normal. It’s usually determined by the setting of the.

A

Needle valve

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59
Q

Isochronous governor is one that has

A

0% speed droop

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60
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

A

Speed droop adjustment

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61
Q

The governor of units designated to regulate systems frequency will generally have speed droop settings under to

A

0%

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62
Q

Governor. Safety devices usually serve to.

A

All of the above

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63
Q

The compensating dash pot is inserted in the

A

Restoring mechanism linkage

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64
Q

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

A

Pilot valve

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65
Q

The purpose of a right angle adapter on a drill is to enable drilling in

A

Close quarters

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66
Q

The shank of a drillbit is held in the

A

Chuck

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67
Q

If you are drilling a hole all the way through a workpiece ease up on the pressure as

A

You approach the other side

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68
Q

You should use a jig when drilling

A

At an angle

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69
Q

You can prevent electric shocks from power tools by

A

Grounding them

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70
Q

A carbide tipped core bit is used for boring holes _____ in diameter

A

Between one and 1/ half to 3 1/2

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71
Q

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

A

Stand

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72
Q

Which of the following is useful in maintaining the proper pressure and drilling speed

A

An ammeter

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73
Q

When using an electric hammer always wear

A

Safety classes

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74
Q

What should never be removed from a three prong plug?

A

The grounding prong

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75
Q

The size of a pneumatic drill is determined by

A

The largest bit the tools chuck will hold

76
Q

You should use a depth gauge when drilling

A

Blind holes

77
Q

The removal of thin layers of metal and rust from a surface is

A

Scaling

78
Q

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

A

General chipping

79
Q

You should flush a pneumatic tool with kerosene when the tool

A

Operates sluggishly

80
Q

Electric nut runners operate at no load speeds of

A

0 to 2500 RPM

81
Q

The Positive drive clutch mechanism on a nut runner remains engaged as long as you press the

A

Bit onto the fastener

82
Q

Most moisture is removed from a pneumatic tools, air supply at the

A

Compressor

83
Q

On pneumatic tools that air hose must be at least one size larger than the

A

Tools, air inlet

84
Q

A saber saw cuts on the

A

Upstroke

85
Q

In regular set sawblades, the Raker’s are

A

The straight tooth

86
Q

A circular saw is best for

A

Long straight cuts

87
Q

The Blade motion of a reciprocating saw is

A

Back and forth in line with the motor

88
Q

Which saw cuts on the backstroke

A

All reciprocating saws cut on the backstroke

89
Q

The size of a circular saw equals

A

The diameter of the blade

90
Q

Rip blades have

A

Teeth with a chisel shape

91
Q

A rip guide limits the width of the cut to about

A

6 inches

92
Q

A diamond grit will must never be used dry because

A

It must be supplied with water

93
Q

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

A

180°

94
Q

Back advancing a router top fast causes

A

Splintering

95
Q

A wide channel cut in a material is called a

A

Dado

96
Q

Examples of template routing include

A

Hinge butt mortising

97
Q

The display drawing shows a

A

Rabbet joint

98
Q

When you are planning a large surface, you should

A

Work down the entire surface evenly

99
Q

On the back of a sanding belt, you will see a code that indicates

A

The grade of grit on the sandpaper

100
Q

The motion of an orbital sander is

A

Circular

101
Q

A pad sander is used with

A

A sheet of abrasive paper

102
Q

Do not use a pad sander to

A

Remove paint or varnish

103
Q

“Course 16–20 4–30 discs are best for

A

Removing paint into smooth surface irregularities

104
Q

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

A

The third symbol

105
Q

The max safe speed for a grinding wheel with silicate bonding as

A

6500 SFM

106
Q

Pneumatic grinders often fail because of

A

Improper lubrication

107
Q

How often should the grease fittings in a pneumatic grinder be greased

A

After 40 hours of use

108
Q

Nibbler’s are rated according to

A

The thickest gauge of mild steel they can cut

109
Q

What is a loaded wet stone?

A

A loaded wet stone is jammed with metal and abrasive particles

110
Q

What part of a wet stone should be used for sharpening a pointed tool

A

The sides of the stone

111
Q

A power tool with an abrasive wheel is called a

A

Bench grinder

112
Q

When sharpening reamers taps and dies, you should avoid grinding or wetting the

A

Tops of the lands

113
Q

To calculate allowable load, you must divide the breaking strength by the design factor for instance a sling with a breaking strength of 25,000 pounds divided by a design factor of five is

A

5000

114
Q

The point at which a load will balance is the

A

Center of gravity

115
Q

Which type of hitch has a clamping effect on its load?

A

A choker hitch

116
Q

The purpose of the latch on a hoist hook is to

A

Retain the sling

117
Q

A hook should be removed if the

A

Tip is bent or twisted

118
Q

If the strands of a wire rope appear to spiral down to the right, and if the wires in the strands appear a wire ropes, cross section would be

A

Right regular lay

119
Q

The following factors affect strength of wire rope and is important to

A

Bending over a curved surface

120
Q

The minimum and maximum temperature a wire rope may be exposed to is

A

-60° to 400°

121
Q

Corrosion usually indicates severe environmental conditions or a lack of

A

Rope lubrication

122
Q

A basic single leg sling cannot make a

A

Bridal hitch

123
Q

A chain marked with the letter H is also known as

A

Grade 43

124
Q

Change slings should usually be inspected

A

Daily

125
Q

In advantage of metal mesh slings is

A

It can conform to irregularly shaped loads

126
Q

There is a slot in one of the standard and fittings for metal mesh slings that allows it to be used

A

For a choker hitch

127
Q

Heavy duty metal mesh is designated as

A

10 gauge

128
Q

The highest grade of Manila rope is

A

Yacht rope

129
Q

Which type of fiber rope is lightest and will float

A

Poly propylene

130
Q

To avoid sharp bending and abrasion the eye of a fiber rope swing should include a

A

Thimble

131
Q

A splice of any type in a fiber rope reduces its strength by about

A

10%

132
Q

Before cutting a fiber rope, the end should be _____ to prevent frame

A

Whipped

133
Q

The process of passing a rope over the sheaves of a hoist to gain mechanical advantage is called

A

Reeving

134
Q

With a double revved hoist

A

True vertical lift is possible

135
Q

The number of rope length between the hoist drum and the hoisting block is

A

Parts

136
Q

Over wrapping can throw a hoist stopping point out of adjustment if a_____ limit switch is used

A

Geared

137
Q

Hoist load chain and sling chain

A

Look similar

138
Q

As a general rule loads should be cut on

A

Wooden blocks

139
Q

One edge of the load serves as a pivot during_____ turning

A

One hook, turning damn

140
Q

If a travel path over a load where people are working

A

Warn them to stay away from the area

141
Q

When should load blocks or other holding devices be placed at the location where a load will be set

A

Before the load is lifted

142
Q

Guard rails, mid rails and toe boards should be installed when scaffolding

A

Higher than 10 foot

143
Q

Guard rails, mid rails and toe boards should be installed when scaffolding

A

Higher than 10 foot

144
Q

A small scissor lift with a foot pedal has a max working height about

A

4 foot

145
Q

The accessory to tighten wires on scaffolding to the right tension is called a

A

Turnbuckle

146
Q

A single 16 foot portable ladder has max working distance of

A

12 foot

147
Q

A wooden ladder shouldn’t be coded in

A

Paint

148
Q

What type of working drawings include a parts list

A

Assembly drawings

149
Q

Which line is used to tie specific notes to a feature in a detailed drawing

A

Leaders

150
Q

In orthographic projection is actually a right angle projection that

A

Eliminates the distortions in shape and size

151
Q

The three views normally shown of an orthographic projection are

A

The top view, front view, or side view

152
Q

Adding a auxiliary view to an orthographic projection shows an objects

A

True shape

153
Q

A screw is a _____ wrapped around a cylinder

A

Inclined plane

154
Q

Which of the following is a permanent fastener?

A

Rivets are permanent fasteners

155
Q

Symbolic thread drawings include

A

Detailed, schematic, and simplified drawings

156
Q

In the specification 10–32 Nc-1b the screw has a_____ fit and a_____ handed thread

A

Loose; right

157
Q

Every machine tool has a complete set of drawing somewhere the set includes

A

Detailed drawings, assembly drawings, and exploded views

158
Q

In an assembly drawing parts that are completely hidden from view are shown by

A

Dash lines

159
Q

The drafter can draw the gear shafts as though they were all positioned in a single plane too

A

Avoid confusion

160
Q

A small line and an a D designate

A

A duct access door

161
Q

What kind of sheet metal development uses a stretch outline?

A

Cylinder

162
Q

The symbol of a square with diagonal lines and short lines that are vertical at the top of the rectangle represent

A

A fire brick

163
Q

Most industrial plant specify bearings in terms of____ and distance in_____

A

North; feet

164
Q

This type of plan covers all the area within the plants boundary lines

A

The site plan

165
Q

The architect makes these layouts to show the arrangement of the different pieces of machinery

A

A floor plan

166
Q

Drawing of the framework, floors, and foundations of the plant are called

A

Structural drawings

167
Q

In Pascal‘s law, Pascal said that in any fluid – liquid or gas – the pressure at any point X

A

Equally in all directions

168
Q

In Pascal‘s law, Pascal said that in any fluid – liquid or gas – the pressure at any point X

A

Equally in all directions

169
Q

Stainless steel piping is usually joined by

A

Welded joints

170
Q

This type of piping carries fluids under pressure or at high temperature

A

Large diameter industrial piping

171
Q

Pipes for this purpose are often made with one and enlarged so that it can fit over the other end. This is a.

A

Bell and spigot joint

172
Q

On plastic pipe, the pipe ends are sealed to the connector by

A

Glue seals

173
Q

Single line drawings use_____ to show the fittings and the sizes of parts

A

Symbols

174
Q

The neutral conductor which is always grounded to earth is always

A

White or gray

175
Q

One type of architectural diagram shows electric distribution to all the plant buildings

A

Plot plan

176
Q

The riser diagram shows how the wiring

A

Goes to each floor of the building

177
Q

An example of flexible conduit is called

A

Greenfield conduit

178
Q

Usually, this is built into the air handling unit

A

Evaporator coil

179
Q

Unitary air-conditioning equipment ____ charged, and tested before installation

A

Assembled

180
Q

Pneumatic controls operate on

A

Low pressure air

181
Q

Refrigerant piping drawings are usually

A

Single line drawings

182
Q

A good sketch is one that

A

Communicates clearly

183
Q

Rapid changes in a pressure system can be accounted for by

A

In accumulator

184
Q

A unitary air-conditioning system is

A

Charged before installation

185
Q

Which view of an orthographic sketch should have the most important details

A

The front

4th Six Month (1 decks)

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