Section #1-1B Flashcards
(274 cards)
1
Q
The most common frequency generated in the United States is 60 cycle
A
True
2
Q
A generation station is a plant that changes fossil fuels, waterfall,or the atom into electrical energy
A
True
3
Q
The generator transforms mechanical energy to electrical energy.
A
True
4
Q
The power take off of a digger Derek is not placed near the operators platform. Name one other component control that is in an isolated location from the platform
A
Outrigger
5
Q
A substation is an installation used to tie the generation system to the transmission system.
A
True
6
Q
A good general rule for the transmission of power is to utilize a voltage value of 500 volts per mile.
A
False
7
Q
The static wire of the transmission line serves the purpose of
A
Shielding the line from lightning
8
Q
Voltages in the range of 138kv to 765kv are referred to as
A
Transmission
9
Q
An electrical system used to connect the consumer to the high voltage system
A
Distribution system
10
Q
The digger of a digger Derrick is connected mechanically to the source of power. Name the other component, which is connected mechanically
A
Winch
11
Q
Most electric energy is generated at a voltage in the range of 13.2kv to 24kv
A
True
12
Q
The devise used to bypass voltage surges to protect electrical equipment.
A
Arrestor
13
Q
A fused devise used to protect electrical equipment
A
Cutout
14
Q
A switch that is Not designed to open under load but used for the isolation of circuits or equipment only.
A
Disconnect switch
15
Q
Low voltage wires extending from the last pole or transformer to the consumer is called a service or a service drop.
A
True
16
Q
Low voltage wires from the distribution transformer to feed several consumers are called ?
A
Secondary
17
Q
No loops are placed in the back of the body belt 2” either side of the center
A
True
18
Q
The minimum distance from the D rings to the tool pocket is
A
4”
19
Q
Climbing equipment should be inspected
A
Before each use
20
Q
Climber gaffs should be sharpened
A
On the bottom side
To a chiseled shaped point
Both of the above
21
Q
The best of the natural fibers for rope
A
Manila
22
Q
The ratio of the safe working load to the breaking strength of the rope is.
A
1 to 5
23
Q
Method of finishing the ends of a rope
A
Eye splice
Back lash
Whipped end
All of the above
24
Q
A rope used to tie materials or tools in place temporarily
A
Sling
25
The outrigger may be used to level the digger Derrick
True
26
The synthetic fiber rope, that is the most elastic.
Nylon
27
Manila rope should not be used on voltages over
5000 volts
28
A quality Manila fiber will appear in color
Light yellow
29
The method of construction of fiber rope which pulls rope together.
Yarns and strands twisted in opposite directions.
30
The most popular rope with power lineman.
Polypropylene
31
A rope used for stringing in a line conductor.
Running line
32
After 6 months of use, the safe working load of rope is reduced by
1/2
33
Rope used to raise and lower heavy loads
Bull rope
34
A disconnect switch is designed to open a circuit under heavy load
False
35
Externally mounted radiators and cooling fans on transformers will increase the capacity of transformers
True
36
"Transmission," " Switching," and "Distribution " are three types of substations
True
37
The purpose of a spare transformer in a substation
For use in the event of transformer failure.
38
Lightning arrestors are installed in substations near
Close to valuable pieces of equipment
Near termination of aerial circuits
Both of the above
39
A switch that is not designed to be opened under load but used for the isolation of circuits or equipment only
Disconnect switch
40
The term for the equipment that permits the remote control of substations.
Supervisory control
41
An electrical devise used to accurately measure line voltage in a substation
Potential transformer
42
"Coupling capacitors" in substations are used for.
Communication signals
43
Device (s) wich supplies the information for the purpose of measuring energy
Potential transformer
Current transformer
Both B&C
44
The voltage at substations may be regulated by TCUL Transformers or step regulators.
True
45
"Like charges attract and unlike charges repel "
An inaccurate statement
46
Elementary particle with a positive charge
Proton
47
Substance containing two or more elements
Compound
48
Basic material that makes up all matter
Element
49
Elementary particle, which is a negative charge
Electron
50
Electron, which will move from atom to atom
Free Electron
51
The smallest part of an element of matter that can enter into chemical reaction to form a compound.
Atom
52
The heart of an atom
Nucleus
53
Has weight and occupies space
Matter
54
Motion of free electrons
Random movement
55
Value of which indicates the number of protons in the atom of a particular element
Atomic number
56
Energy level within energy levels
Sub-shell
57
The "Shell" is an energy level of an atom identified by letter
True
58
Indicates how many equal parts the whole untit is divided.
Denominator
59
Indicates how many equal parts of the whole unit are being considered
Numerator
60
Indicates what part of the whole unit
Fraction
61
1/4
Proper
62
24/6
Improper
63
5/5
Improper
64
7 1/5
Mixed
65
From the fraction 5/8, the 5 is the:
Numerator
66
From the fraction 3/4, the 4 is the
Denominator
67
The term used for multiphase is "polyphase"
True
68
Direct current (DC) transmission of the bulk power is feasible when utilization is a minimum distance of
400 miles
69
The most common frequency for generated voltages in the United States is
60 cycles
70
Most transmission lines in the United States are direct current (DC)
False
71
The advantage of 3-phase in the operation of motors.
More economic and more efficient
72
A source of electricity produced by the cutting of Flux lines.
Magnetic
73
A source of electricity that is used in batteries.
Chemical
74
A source of electricity that is used in photoelectric cells
Light
75
A generator is an example of
Chemical
Friction
Pressure
None of the above
76
A source of electricity produced from crystals
Pressure
77
2/3+1/3+1/3=
11/3
78
5/6+1/3+1/3=
11/2
79
3/5+2/7+4/35=
1
80
2 3/4+1 2/3=
45/12
81
4 4/7+ 2 16/21 + 1/3 =
7 2/3
82
8 1/2 + 3 2/3 =
12 1/6
83
5/8- 1/8 =
1/2
84
5/8- 1/2 =
1/8
85
7 1/5 - 4 1/3 =
2 13/15
86
4 11/16 - 1 1/8 =
3 9/16
87
5 1/16 - 2 1/32 =
3 1/2
88
3 2/3 - 1 3/4 =
1 11/12
89
12 2/3 - 1 1/2 =
11 1/6
90
From the illustration below, each suspension insulator is 5 3/4" in length, and the pole is 10" in diameter. What is the minimum required extension of the hardware required to satisfy the minimum of 3' of clearance to the live line.
19 1/2
91
The leading cause of accidents
Human failure
92
The type of fire extinguisher for class C fire.
Multi purpose dry chemical
93
The type of fire extinguisher for ordinary combustible fires
Foam
Multi purpose dry
Carbon dioxide
94
A petroleum fire is classified as
Class B fire
95
After 6 months of use, the WLL of a fiber rope is reduced to one half
True
96
A quality manilla fiber will appear in color
Light yellow
97
The ratio of the safe working load to the breaking strength of fiber rope is
1 to 5
98
Balanced primary feeders reduce line losses because
Current is even across all conductors of the line
99
The distribution system connects the high voltage system to the consumers equipment
True
100
Low voltage wires from the distribution transformer to feed several consumers is called
Secondary
101
A common residential service
120/240 volt 3phase 3 wire
102
In the transmission of power, an increase in voltage would yield ? In current
Decrease
103
The single phase transformer is less efficient than a three phase motor
True
104
A fused devise used to protect electrical equipment
Cutout
105
Climbing equipment should be inspected
Before each use
106
The most popular rope with power lineman is
Polypropylene
107
The best of natural fibers for rope
Manila
108
The safe working load to the breaking strength of the rope is
1 to 5
109
A term used for a diagram that represents an actual electrical circuit with components represented by graphical symbols
Schematic
110
The fuse will serve to limit the
Current in the circuit
111
A stored quantity of electrical energy
Charge
112
In electricity, the force that tends to have like charges move away from each other.
Repulsion
113
A term relating to the physical strength of a wood pole, and calculated by the circumference at the top of the pole and a point 6' from the butt of the pole.
Class
114
Classification of steel towers
Rigid and flexible
115
A disconnect switch is a no load switching device.
True
116
Good treatment will double the life of a wood pole
True
117
Chromate copper arsenate is a chemical used to kill brush after a tree trimming operation
False
118
The safety factor for the weight applied to a pole
5 to 1
119
The static wire on a transmission line serves as an electrical shield
True
120
The potential transformer is designed to measure
Voltage
121
The unit of electrical pressure
Volt
122
The unit of electrical work. (1columb / volt )
Joule
123
A unit of measure of a quality of electrons : approximately 6.25 × 10
Coulumb
124
Voltage is measured by placing the voltmeter lead into the circuit.
False
125
The current in the circuit below will flow
Clockwise
126
"Unlike charges attract and like charges repel"
Coulumbs law
127
Basic material that makes up all matter
Elements
128
Anything that has weight and occupies space
Matter
129
Fifty-seven and one tenth
57.1
130
One thousand and twenty -five thousandths
1000.025
131
Fourteen and two thousandths
14.002
132
Seven hundred and fifty six and one tenth
756.1
133
Ten thousand and one ten thousandths
10000.0001
134
5 6/100
5.06
135
1 21/100
1.21
136
871/1000
.871
137
16.1 × 10'
1610
138
250x10' 2
2.5
139
835÷10'
8.35
140
3.5 Amp equals 3500
Milliamp
141
4 megawatts equals 4000
Kilowatts
142
Prefix representing 1/1,000,000 of a unit
Micro
143
Prefix representing 1/1,000 units
Milli
144
Prefix representing 1000
Kilo
145
The term "natural trimming" refers to the pruning off of limbs near the parent limbs.
True
146
The three common plants include poison sumac, poison ivy, and poison oak
True
147
The first treatment for poisonous plants is to wash with soap and water and apply alcohol rinse with water and dry.
True
148
The clearance achieved during the tree trimming operation should provide adequate clearance for a minimum of
2 years
149
The trimming must be done in the fall and the winter to protect t the life of the trees
True
150
The two hitches used on the climbing rope by tree trimmers
Clove and taut
151
A "Danger tree" is a tree outside of the right of way that could fall within a distance of ? Of the line
5'
152
The advantage of 3 phase power in the operations of motors
More economical motors
More efficient operations
153
Opposition to the flow of current
Resistance
154
The unit of measure of current
Amp
155
The unit of measure of resistance
Ohm
156
The electrical symbol for the opposition of current flow
R
157
The electrical symbol of current
I
158
Current which flows in only one direction
DC
159
A circuit that has all of its components connected from end to end
Series
160
A name specific for a number of electrons, which total 6.26 x10
Coulomb
161
Energy on a transmission system is lost in the form of
Heat
162
One coulomb in one second equals one ampere.
True
163
10 coulombs in 10 seconds
1 amp
164
15 coulombs in 3 seconds
5 amps
165
A source of electricity that is used in photoelectric cells
Light
166
A source of electricity produced by the cutting edge of Flux lines
Magnetic
167
A generator converts mechanical energy to electrical energy
True
168
The meter used to measure current flow
Ammeter
169
To measure current flow, the meter is connected
Into the circuit
170
A mathematical relationship that exists between voltage, current, and resistance
Ohms law
171
6X + Y + 2Y
6X + 3Y
172
5R + 3R + 6 + 2
8R+8
173
20X/10
20
174
7X + 9 =30
3
175
5X = 40
8
176
3X + 5 = 50
15
177
3X - 4 = 20
8
178
"Lay length" refers to
Length of one revolution of a strand
179
The term "Lay" refers to
Configuration of strands and wires
180
Give the ratio of the tensile strength to the SWL of wire rope when hoisting personnel.
10 to 1
181
From the figure below, identify the lay construction.
Left regular lay.
182
Identify the lay construction for the following wire ropes. The strands and wires rotate to the left.
Left Lang lay
183
The strands rotate to the right, and the wires rotate to the left.
Right regular lay
184
"Preforming" improves a wire ropes
Resistance to unraveling
Resistance to fatigue
185
IWRC refers to
The core of a wire rope
186
XIP refers to
The grade of the wire rope
187
The wire rope, which has the greatest resistance to bending fatigue
Lang lay
188
The wire rope, which has the greatest resistance to rotation from a suspended load
Regular lay
189
Extra improved plow steel, improved plow steel , and plow steel all refer to the
(Grade) of metal used in the manufacturing of the wire rope
190
Balanced primary feeders reduce the
(Voltage) drop in the circuit
191
A fused devise used to protect electrical tri al equipment
Cutout
192
Formula states that it takes one volt to draw one Ampere through 1ohm of resistance
Ohms law
193
Give the formula for computing current; if voltage and resistance are known
I=E/R
194
A heating element has a resistance of 2 ohms. How much current will it take when connected to a 120-volt circuit
60 amps. 120/2
195
The most dangerous amount of current that can pass through the human body is above 100 miliamps. This amount of current is usually fatal. If the resistance of the body is 10,000 ohms and the body should touch a conductor energized with 2400 volts, could the value of the current prove fatal.
Yes
196
The resistance of 1000' of #2 copper wire is 1563 ohms. What is the voltage drop in 2000' of this wire when 90 amps flows through it?
28 volts
197
Give the formula for computing resistance if the voltage and current are known
R=E/I
198
With voltage constant, current is ? Proportional to resistance
Inversely
199
Whith resistance constant, voltage is ? Proportional to current
Directly
200
Calculate the voltage drop in 2000' of # 4 copper wire if the resistance of #4 copper is .2485 ohms per 1000' with a current flow of 26 Amps
7.46
201
If you wanted to decrease the current in a circuit. You would ? the resistance
Increase
202
How many amps will a heater draw that has a resistance of 48 ohms and is connected to a 480-volt source.
10 amps
203
What is the resistance of a 120-volt electric heater that draws 12 ampers
10 ohms
204
What voltage is required to force 15amps through a resistance of 32 ohms
480 volts
205
15 is what percent of 45
33 1/3%
206
What is 5 % of 50
2.5
207
A 345 Kv transmission line has an 8% voltage loss. What is the voltage at the load
317.4 kv
208
A 12 % discount will be given on a 2,500 order of transformers if paid within 30 days. What will be the cost of the transformers.
2,200.00
209
A 20 hp motor has an efficiency of 60% . What is the output of the motor
6 Hp
210
100 is 5% of what #
2000
211
Method of finishing off the ends of rope
Backlash
Eye splice
Whipped end
212
A square knot has ?% of the strength of a straight rope
50%
213
The following bend is called a
Bight
214
The following bend is called a
Loop bend
215
Another name for the butt splice
Short splice
216
The short end of the rope, which has a bight
Running end
217
Another name for the side splice
Eye splice
218
Used to shorten a rope without cutting
Sheepshank
219
Used to fasten a rope to another rope of equal size
Square knot
220
Used to join ropes of dissimilar size
Single sheet bend
221
The strongest straight splice for a fiber rope
Short splice
222
A splice that would be used for rope running through a sheave
Long splice
223
A slip hitch is used on the end of a rope to hoist cylindrical objects
Timber hitch
224
A non-slip eye for general use, which will not jam and unties easily
Bowline knot
225
A transformer will function normally on a direct current circuit
False
226
In the transmission of power, an increase in voltage would result in a ? In current
Decrease
227
A constant - current transformer is classified as a ? Transformer
Street- lighting
228
Example of instrument transformers
Potential transformer
Current transformer
229
External cooling devices will increase the capacity of a transformer
True
230
The primary side of a step-up transformer
Low voltage side
231
The magnetic circuit of a transformer
Core
232
A transformer rated at 500 kva is considered a distribution transformer
True
233
A transformer that is coupled magnetically magnetically and electrically
Autotransformer
234
The core construction of a transformer that has the core surrounding the coils
Shell
235
The conductor insulation in transformer windings absorbs the insulating fluid
True
236
The function of oil in a transformer
Cool and insulate
237
The indicating red light on a CSP transformer indicates that the service fed by that transformer is definitely interrupted
False
238
The core of the transformer is laminated to reduce eddy currents
True
239
The winding conductors are all round in cross - sectional shape in transformers
False
240
" Coupling Capacitors " in substations are used for communications signals
True
241
An electrical device used to meter voltage, which is high in value
Potential transformer
242
The high and low sides of a transformer can be determined by the size of the bushing
True
243
Chromated Copper Arsenate is
A pole preservative
244
Askarel is banned from use in electrical equipment because of
Environment considerations
245
Oil should be replaced or filtered if voltage flash-over point is ? Or lower
17,500
246
New insulating fluid should have a minimum flash over-over test voltage of -
30,000 volts
247
The two (2) primary functions of oil in electrical apparatus.
Cool and insulating
248
Oil will conduct heat more efficiently than air
True
249
Qualities of a good insulating/cooling fluid
High insulating and heat conducting properties
Low moisture content
Low flash piint
250
Insulating/cooling fluid in general use for electrical equipment
Mineral oil
251
The standard test devise for testing the dielectric strength of insulating oil has electrodes spaced ? Of an inch apart
1/10
252
The test devise in question #8 has electrodes that have a diameter of
1"
253
When oil crackles when hot metal is placed into, it is an indication of -
Moisture
254
Oxygen causes oil to deteriorate and darken
True
255
Method of removing moisture from oil
Filter press
Raise temperature of oil above 212 degrees
256
Substation transformer equipped with an expansion tank has a supply of dry ? Gas for the purpose of replacing atmospheric air
Nitrogen
257
The first step must be followed. Immediately after refilling a transformer with new oil
Allow time to settle
258
A transformer that repeatedly blows fuses during an electrical storm
Has a high moisture content in the oil
259
A vector shows
Magnitude and direction
260
A graphic method of solving two vectors connected tail to tail
Parallelogram
261
A graphic method of solving 2 or more vectors connected sierries, or head to tail
Triangle method
262
When testing transformers for polarity, the lineman will
Ground the tank
Apply low voltage to the high side terminals
263
Which of the following single phase transformers is subtractive by Nema standards
12000 volt 50 Kva
264
Most smaller distribution transformers are
Additive
265
The single bushing on the highline of the transformer is identified as
H1
266
A transformer with a primary coil voltage of 7200 and a 25Kva capacity rating is
Additive
267
The term "polarity" refers to the relative instantaneous polarity in the 2 winding
True
268
When testing a transformer for polarity, a low voltage is impressed on the ? voltage winding
High
269
The wire rope which has the greatest resistance to rotation.
Regular lay
270
"Performing" improves a wire ropes
Resistance to unraveling
Resistance to fatigue
271
The resistance of a conductor is directly proportional to its length
True
272
The term "lay" refers to the number of strands and wires of a wire rope
False
273
The "right regular lay" wire rope the strands, and the wires rotate right
False
274
The wire rope that has the greatest resistance to wear from bending
Lang lay
