Section #1-1B Flashcards
The most common frequency generated in the United States is 60 cycle
True
A generation station is a plant that changes fossil fuels, waterfall,or the atom into electrical energy
True
The generator transforms mechanical energy to electrical energy.
True
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
Outrigger
A substation is an installation used to tie the generation system to the transmission system.
True
A good general rule for the transmission of power is to utilize a voltage value of 500 volts per mile.
False
The static wire of the transmission line serves the purpose of
Shielding the line from lightning
Voltages in the range of 138kv to 765kv are referred to as
Transmission
An electrical system used to connect the consumer to the high voltage system
Distribution system
The digger of a digger Derrick is connected mechanically to the source of power. Name the other component, which is connected mechanically
Winch
Most electric energy is generated at a voltage in the range of 13.2kv to 24kv
True
The devise used to bypass voltage surges to protect electrical equipment.
Arrestor
A fused devise used to protect electrical equipment
Cutout
A switch that is Not designed to open under load but used for the isolation of circuits or equipment only.
Disconnect switch
Low voltage wires extending from the last pole or transformer to the consumer is called a service or a service drop.
True
Low voltage wires from the distribution transformer to feed several consumers are called ?
Secondary
No loops are placed in the back of the body belt 2” either side of the center
True
The minimum distance from the D rings to the tool pocket is
4”
Climbing equipment should be inspected
Before each use
Climber gaffs should be sharpened
On the bottom side
To a chiseled shaped point
Both of the above
The best of the natural fibers for rope
Manila
The ratio of the safe working load to the breaking strength of the rope is.
1 to 5
Method of finishing the ends of a rope
Eye splice
Back lash
Whipped end
All of the above
A rope used to tie materials or tools in place temporarily
Sling
The outrigger may be used to level the digger Derrick
True
The synthetic fiber rope, that is the most elastic.
Nylon
Manila rope should not be used on voltages over
5000 volts
A quality Manila fiber will appear in color
Light yellow
The method of construction of fiber rope which pulls rope together.
Yarns and strands twisted in opposite directions.
The most popular rope with power lineman.
Polypropylene
A rope used for stringing in a line conductor.
Running line
After 6 months of use, the safe working load of rope is reduced by
1/2
Rope used to raise and lower heavy loads
Bull rope
A disconnect switch is designed to open a circuit under heavy load
False
Externally mounted radiators and cooling fans on transformers will increase the capacity of transformers
True
“Transmission,” “ Switching,” and “Distribution “ are three types of substations
True
The purpose of a spare transformer in a substation
For use in the event of transformer failure.
Lightning arrestors are installed in substations near
Close to valuable pieces of equipment
Near termination of aerial circuits
Both of the above
A switch that is not designed to be opened under load but used for the isolation of circuits or equipment only
Disconnect switch
The term for the equipment that permits the remote control of substations.
Supervisory control
An electrical devise used to accurately measure line voltage in a substation
Potential transformer
“Coupling capacitors” in substations are used for.
Communication signals
Device (s) wich supplies the information for the purpose of measuring energy
Potential transformer
Current transformer
Both B&C
The voltage at substations may be regulated by TCUL Transformers or step regulators.
True
“Like charges attract and unlike charges repel “
An inaccurate statement
Elementary particle with a positive charge
Proton
Substance containing two or more elements
Compound
Basic material that makes up all matter
Element
Elementary particle, which is a negative charge
Electron
Electron, which will move from atom to atom
Free Electron
The smallest part of an element of matter that can enter into chemical reaction to form a compound.
Atom
The heart of an atom
Nucleus
Has weight and occupies space
Matter
Motion of free electrons
Random movement
Value of which indicates the number of protons in the atom of a particular element
Atomic number
Energy level within energy levels
Sub-shell
The “Shell” is an energy level of an atom identified by letter
True
Indicates how many equal parts the whole untit is divided.
Denominator
Indicates how many equal parts of the whole unit are being considered
Numerator
Indicates what part of the whole unit
Fraction
1/4
Proper
24/6
Improper
5/5
Improper
7 1/5
Mixed
From the fraction 5/8, the 5 is the:
Numerator
From the fraction 3/4, the 4 is the
Denominator
The term used for multiphase is “polyphase”
True
Direct current (DC) transmission of the bulk power is feasible when utilization is a minimum distance of
400 miles
The most common frequency for generated voltages in the United States is
60 cycles
Most transmission lines in the United States are direct current (DC)
False
The advantage of 3-phase in the operation of motors.
More economic and more efficient
A source of electricity produced by the cutting of Flux lines.
Magnetic
A source of electricity that is used in batteries.
Chemical
A source of electricity that is used in photoelectric cells
Light
A generator is an example of
Chemical
Friction
Pressure
None of the above
A source of electricity produced from crystals
Pressure
2/3+1/3+1/3=
11/3
5/6+1/3+1/3=
11/2
3/5+2/7+4/35=
1
2 3/4+1 2/3=
45/12
4 4/7+ 2 16/21 + 1/3 =
7 2/3
8 1/2 + 3 2/3 =
12 1/6
5/8- 1/8 =
1/2
5/8- 1/2 =
1/8
7 1/5 - 4 1/3 =
2 13/15
4 11/16 - 1 1/8 =
3 9/16
5 1/16 - 2 1/32 =
3 1/2
3 2/3 - 1 3/4 =
1 11/12
12 2/3 - 1 1/2 =
11 1/6
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
The leading cause of accidents
Human failure
The type of fire extinguisher for class C fire.
Multi purpose dry chemical
The type of fire extinguisher for ordinary combustible fires
Foam
Multi purpose dry
Carbon dioxide
A petroleum fire is classified as
Class B fire
After 6 months of use, the WLL of a fiber rope is reduced to one half
True
A quality manilla fiber will appear in color
Light yellow
The ratio of the safe working load to the breaking strength of fiber rope is
1 to 5
Balanced primary feeders reduce line losses because
Current is even across all conductors of the line
The distribution system connects the high voltage system to the consumers equipment
True
Low voltage wires from the distribution transformer to feed several consumers is called
Secondary
A common residential service
120/240 volt 3phase 3 wire
In the transmission of power, an increase in voltage would yield ? In current
Decrease
The single phase transformer is less efficient than a three phase motor
True
A fused devise used to protect electrical equipment
Cutout
Climbing equipment should be inspected
Before each use
The most popular rope with power lineman is
Polypropylene
The best of natural fibers for rope
Manila
The safe working load to the breaking strength of the rope is
1 to 5
A term used for a diagram that represents an actual electrical circuit with components represented by graphical symbols
Schematic
