Home Studies Flashcards
1
Q
What designates the overall size of the sheet on which the drawing is to be made.
A
Letter
2
Q
2
A
2
3
Q
3
A
3
4
Q
4
A
4
5
Q
A cut surface is shown with
A
Slanted Crosshatch Lines
6
Q
6
A
6
7
Q
7
A
7
8
Q
Which thread class fits the loosest?
A
Class 1
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
10
Q
A grooved pulley with V shaped belts is called a?
A
Sheave
11
Q
It serves as a base for mounting the tool holder on a lathe
A
Compound rest
12
Q
What view shows all the parts in a mechanism separated from one another?
A
Exploded View
13
Q
The lower part of a compound rest is called a?
A
Swivel
14
Q
The upper part of a compound rest is called a?
A
Rest top
15
Q
An orthographic projection compresses everything into a?
A
Two-dimensional plane
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
17
Q
A duct labeled 12”x20” means?
A
Width is 12”
Depth is 20”
18
Q
Cross section of supply duct
A
Box w an X in the middle
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
20
Q
19
A
19
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
22
Q
21
A
21
23
Q
Most plat gives bearing in terms of?
A
Magnetic north
24
Q
Layout that shows the arrangement of different pieces of machinery, offices, and storerooms?
A
Floor Plan Layout
25
23
23
26
Drawings of the framework, floors, and foundations of a plant are called?
Structural Drawings
27
Flow Diagrams are used when a material or product flow pattern is required. It can be either floor plans or?
Elevation Drawings
28
__________ __________ states that in any fluid-liquid or gas - the pressure at any point acts equally in all directions
Pascals Law
29
If equal pressure is applied on both the rod and blank side of a piston, the total force will be greater on the __________ side.
Blank
30
28
28
31
29
29
32
30
30
33
Galvanized iron pipes have __________ __________ and are often joined by threading the ends and screwing the sections together.
Threaded Joints
34
The __________ forces the two sections of pipe together tighter and tighter as you assemble the joint, making the joint strong and water tight.
Taper
35
__________ joints are used in large diameter industrial piping that carries fluids under pressure or at high temperatures
Flanged
36
When two different metals make electrical contact with each other, an electro-chemical reaction can occur. This reaction is called a?
Galvanic reaction
37
When __________ corrodes, the corrosion forms a tight coating that keeps oxygen from reaching the layers of _________!and iron underneath
Zinc
38
36
Symbol for a fuse
39
Current is measured in units called?
Amperes
40
The __________ are made of wire wrapped around the core
Windings
41
A __________ __________ shows you the loads served by each circuit.
Circuit Diagram
42
A _________ plan shows all the electrical distribution to all the plant buildings.
Plot
43
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 _________.
Coolant
| Refrigerant
44
This valve holds the refrigerant on one side at a higher pressure than on the other side
Expansion valve
45
An indirect system uses a _________ _________ that cools the air
Heat exchanger
46
Pneumatic controls operate on?
Low pressure air
47
Refrigerant piping drawing are usually?
Single line drawings
48
A good sketch is one that?
Communicates clearly
49
A _________ sketch shows an object in three dimensions.
Pictorial
50
The name __________ means "equal measure". In an __________ sketch, the scale of the drawing is not reduced for points farther from the viewer.
Isometric
51
In a __________ view, parts farther from the front appear smaller then parts near the front
Perspective
52
In reality, parallel lines __________ meet
Never
53
A schematic is made up of?
Symbols and lines
54
Double line drawings that show the internal details of a pneumatic system are called?
Cutaway drawings
55
In a DC circuit, the electrons flow from?
One direction only
56
Arrows are used on piping diagrams to indicate?
Direction of flow
57
In a piping system, an alternate flow path is indicated by a
Supplementary diagram
58
On an electrical diagram, a dashed line indicates?
Exposed wire
59
Vent lines and drain lines are shown on a hydraulic schematic by?
Dashed lines
60
If a schematic carries no legend, clues about it may be found in the parts list, drawing title and
Engineers notes
61
Circle w an arrow represents a?
Gauge
62
What is the last step in troubleshooting an electrical circuit when using a schematic?
Examine the actual circuit
63
Which electrical symbol represents connecting wires?
Crossed wires w a dot
64
Symbol for SPDT switch
. ./ .
65
Symbol for transformer
) ll (
) ll (
) ll (
66
Electrical symbol for fuse
-[ ]-
67
Electrical symbol show NC contacts
l
=\
l
68
An electric circuit in which the current path goes from one load to the next is called a?
Series circuit
69
An electric circuit that allows each load to be turned on and off independently of the others is called a?
Parallel circuit
70
A wiring diagram shows how the parts of a circuit are connected?
Externally
71
Wired labeled "L" on a schematic?
Carry power from the source
72
The forward button is marked?
FOR
73
The flow of material in a piping system is controlled and adjusted by?
Valves
74
Symbol for flanged joint?
-l l-
75
Direction of flow in a piping system can be changed by a?
Elbow
76
What part of a piping system connect pipes of different diameters?
Reducer
77
Symbol for screwed tee fitting
l
l
-
78
A valve is used to __________ in a piping system
Control the flow
79
A cock valve is used to?
Turn flow on or off quickly
80
Symbol for a globe valve
>o
81
A check valve
Allows flow in only one direction
82
30
30
83
Both hydraulic and pneumatic systems are?
Fluid power systems
84
In a fluid power system, the ________ reacts to the pressure of the fluid and does the work
Actuator
85
Symbol for a receiver in a pneumatic system
(===)
86
The basic symbol for a valve shows its connections, flow path and
Functions
87
Symbol for valve in a closed position
Blocked DCV ports
88
Symbol for electric motor
Circle w M in the middle
89
Which element of a hydraulic braking system directs the flow of the brake fluid?
Valve
90
If the fluid in a hydraulic or pneumatic system is used again and again it is called a?
Closed system
91
On a hydraulic or pneumatic diagram, local areas are outlined by what?
------- -- -- -------
92
Symbol for a push button
Square w a dot in the middle
93
In a refrigeration subsystem of an A/C and R system, what is another term for an evaporator?
Liquid Chiller
94
Symbol for a rotary compressor
Circle w a square on top
95
In an A/C and R system, thermostatic expansion valves and ADR valves are used on?
Direct control
96
In a diagram for an electric control circuit, which shows wiring to be installed on site?
- - - - - - -
97
What solid state device in an AC system can amplify and switch electrical signals?
Transistor
98
Fusion welding means joining two materials by?
Melting them together
99
The basic method of fusion welding that uses the squeeze and heat process is?
Resistance welding
100
Symbol for weld w chamfering
Tilted V
101
If the part is to be welded in the field, the weld symbol will include a?
Flag
102
Standard dimensions for a weld
May appear in a legend on a welding diagram
103
What is the principle operation of the fly ball?
It is to maintain a constant speed or load on a unit
104
At what speed does the governor allow the brakes to be applied on a generator?
At 50% speed or less
105
What is the purpose of the speed drop mechanism on an Allis-Chalmers unit?
Cause the hydraulic turbine to divide the load between generators in the desired proportions
106
What is the principle part of the Kaplan Control mechanism?
A regulating valve with valve actuator and pilot valve
107
What is the permanent generator designed to give?
Mounted vertically on top of the main generator it is designed to give long service with minimal attention
108
What is the normal open circuit voltage of the permanent Magnet Generator on a Pelton Governor?
240V at 600rpm
| 160V at 400rpm
109
When should the vibrators on a Woodward Governor be replaced?
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
What is the purpose of the dashpot on an Allis-Chalmers governor?
To prevent the flyball from over correcting
111
A hydraulic turbin governor must maintain a balance between the?
Water input to the turbines and the power requirements on the system
112
Governor settings and responses must take in to consideration?
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
Any change in the position of the flyballs is transmitted to the pilot valve by the?
Speeder rod
114
The compensating dashpot is inserted in the
Restoring mechanism linkage
115
The compensating dashpot serves to prevent over travel or hunting of the gates by recentering the
pilot valve
116
The rate at which the smaller plunger of the compensating dashpot returns to normal is usually determined by the setting of the?
Needle valve
117
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?
Speed drop adjustment
118
The governors of units designated to regulate system frequency will generally have speed drop settings closer to?
0%
119
An isochronous governor is one that has?
Zero speed droop
120
Governor safety devices usually serve to?
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
What is the weight of a 36 ft American Standard I beam designated S15 x 42.9? Use W=w/ft x L
W=w/ft x L
| 42.9 x 36ft = 1544.4 lb
122
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?
Increases as the sling angle gets smaller
123
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?
Basket
124
Which of the following hooks has a point designed to fit into a hole in the load?
Sorting hook
125
A hook should be removed from service if?
The tip is twisted more than 10% out of line
126
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
Right regular lay
127
If a wire rope is classified as 6 x 37, the figure 37 means that
Each strand of the rope contains a nominal 37 wires.
128
The following factors all affect wire rope strength In which one is the D/d ratio important?
Bending over a curved surface
129
Which of these wire rope end fittings is the most efficient?
Speltered socket
130
If a rigger finds that a wire rope sling is kinked, he should
Remove it from service
131
Which of the following identifications would be most likely to appear on the links of a chain suitable for overhead lifting?
800
132
The specification for welded link chain that corresponds to a wire ropes rated load is called the chains
Working load limit
133
If an alloy steel chain has been subjected to temperatures over 1000*(540*C)
It should be removed from service
134
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
Choker
135
You should recommend removing a metal mesh screen from service if
One welded joint at the edge of the sling is broken
136
The strongest and most popular of the synthetic fiber ropes is
Nylon
137
Tho avoid sharp bending and abrasion, the eye of a fiber rope sling should include a
Thimble
138
A fiber rope swing should be removed from service if it
Shows kinking
139
The rated load, or capacity of an encased polyester sling is indicated by the
Color of the cover
140
You should remove a synthetic web sling from service if
If it is scorched
141
A pocket wheel is part of an
Overhead manual chain hoist
142
The purpose of an upper limit switch is to
Keep the load block from raising dangerously high
143
The difference between top-running and under hung cranes lies in
How the end trucks of the bridge beam are supported
144
When a rigger lifts a load a few inches, then stops to see if the load drifts downward, what is he checking?
Lower limits switch
145
Wire rope should be removed from hoist service if the rigger finds
Two broken wires at a socketed end fitting
146
In a crane operation involving several people
The operator must respond to a "STOP" signal from anyone
147
You should not use metal mesh slings if
If the spirals do not move freely
148
When working with floor operated hoists and cranes, you should make sure that the
Obstructions can be cleared by the moving load
149
One edge of the load serves as a pivot during _________ turning
One hook
150
When shoulda blocks or other holding devices be placed at the locations where a load will be set
Before the load is lifted
151
The height of a movable sectional metal scaffold that measures 4 x 8 ft at the base, should not exceed ________ ft
16
152
A hydraulic scissor lift of the larger type can safely support ___________ workers and their equipment
2
153
Each worker on a suspended scaffold must wear a safety belt connected to a lifeline that is attached to
The structure being worked on
154
When you secure a scaffold with guy wires, what accessories do you use to tighten the wires to the correct tension?
Turnbuckles
155
A wooden ladder must not be coated with
Paint
156
Before new equipment arrives at the plant, plans for installing it are made by?
Plant engineer
157
When pouring a concrete footing, you should hold the steel rods in position with?
Tie wires
158
The best materials for filling around a foundation are gravel and
ground concrete slabs
159
The type of bolt to anchor the equipment is usually specified by the
Equipment manufacturer
160
How long must new concrete sit before you install concrete on it?
28 days
161
Retainers on the side of horizontally reciprocating equipment keep it from?
Walking
162
To isolate anchor bolts when mounting equipment on pads, surround the bolts with
Neoprene tubing
163
What type of wrench should you use to tighten anchor bolts?
Torque
164
To drill anchor bolts larger than 1-1/2", you should use a?
Core bit with diamond or carbide tip
165
You should not use a concrete mix to grout anchor bolts, because the concrete
Shrinks when it sets
166
If new equipment is damaged in shipment, you should report it to the
Carrier
167
What must you do first before disconnecting the electric wiring to existing equipment?
Shit off the power
168
What is the least number of rollers you should use under a load on a skid?
Three
169
When moving equipment with a crowbar, what should you use between the bar and the floor?
Wood block
170
If you have no clearance to remove a sling after setting the equipment down, you should lower the equipment on to
Wedges
171
To keep your body heat from affecting a master precision level, you should handle it by its
Non heat conductive top plate
172
To support a level on an inverted V shaped way, use a precision
V block
173
To support a level across machine tool ways in different planes, you should use precision ground parallels or
Gauge blocks
174
The common dial indicator is usually used w a _________ base
Magnetic
175
When an alignment screw is finally set, you can prevent further movement by
Applying a sealing compound
176
The external air lines on equipment usually terminate just beyond a filter or a
Regulator
177
If the fluid in a system is thick, you can control it with a ________ check valve
Ball
178
You can keep the fluid pressure in a line near a preset level with a ________ valve
Regulating
179
A copy of the manufacturers test date is often attached to the _______ of new equipment
Manual
180
High temperatures during equipment startup is usually caused by
Poor lubrication
181
A right angle adapter can be added to a drill for drilling
In close quarters
182
The shank of a drill bit is held in the
Chuck
183
If you are drilling a hole all the way through a work piece, you should ease up on the pressure when the bit
Nears the other side
184
You should use a jig when
Drilling at an angle
185
You can prevent electric shocks from power tools by
Grounding them
186
A carbide tipped core bit is used for drilling holes _________ in diameter
Between 1-1/2"- 3-1/2" in
187
When drilling with a diamond aggregate core bit, you must use a special rotary hammer and a
Stand
188
Which of the following is useful in maintaining the proper pressure and drilling speed when using an electric hammer
Ammeter
189
When using an electric hammer, always wear
Safety glasses
190
What should never be removed from a three prong plug?
Grounding prong
191
The size of a pneumatic drill is determined by the
Largest bit the chuck will hold
192
You should use a depth gauge when drilling
Blind holes
193
The removal of thin layers of metal or rust from a surface is an example of
Scaling
194
When you use a pneumatic hammer, a flat blade chisel is best for
General chipping work
195
You can flush the pneumatic tool w kerosene when the tool
Operates sluggishly
196
The speed of a power screwdrivers spindle at no load is called the tools
Free speed
197
Electric nutrunners operate at no-load speeds of
0-2500rpm
198
The positive drive clutch mechanism remains engaged as long as you press the
Bit on to the fastener
199
For pneumatic tools, a filter is installed at the end of the air line to remove
Water
200
On pneumatic tools, the air hose should be at least one size larger than the
Air inlet
201
A saber saw cuts on the
Upstroke
202
In regular set saw blades, the taker is the
Straight tooth
203
A circular saw is best for
Long, straight cuts
204
The blade motion of a reciprocating saw is
Back and forth in line w the motor
205
Which saw cuts on the backstroke
Reciprocating saw
206
The size of a circular saw equals the
Diameter of the blade
207
The rip blade has
Teeth w a chisel shape
208
A rip guide limits the width of the cut to about
6 in
209
A diamond grit wheel
Must be supplied with water
210
A saw protractor has a movable arm which can be set in small increments up to
180*
211
Advancing a router too fast cause
Scoring
212
A wide channel cut in a material is called a
Dado
213
Examples of template routing include
Hinge-butt mortises
214
The drawing below shows a ________
Rabbet
215
When planing a large surface, you should
Work down the entire surface evenly
216
The width of the sanding belt determines
The size of the sander
217
The motion of an orbital sander is
Circular
218
A pad sander is used with
Abrasive paper
219
Do not use a pad sander for
Removing paint and varnish
220
Open coat, 17-24-30 sanding disks are best for
Removing paint and smoothing surface irregularities
221
Which symbol in the marking code on a Grinding wheel indicates the bond grade
Third
222
The maximum safe speed for a grinding wheel with a silicate bond is
6500sfm
223
Pneumatic grinders often fail because of
Improper lubrication
224
How often should grease fitting in a pneumatic grinder be greased?
After 40 hours of use
225
A nibbler is rated according to
The thickest gauge of steel it can cut
226
A loaded whetstone is
Jammed with metal and abrasive particles
227
Which part of a whetstone should be used for sharpening a pointed tool
Sides only
228
A power tool with an abrasive wheel is called a
Bench grinder
229
When sharpening a drill bit, you should hold the bit at an angle of _________ to the face of the grinding wheel
59*
230
When sharpening readers, taps and dies, you should avoid grinding or whetting the
Tops of the lands
