Lesson 10 Flashcards
Everyone, except qualified employees, must stay at least ? from apparatus energized up to 50,000 volts.
Select one:
a. 4’
b. 6’
c. 8’
d. 10’
d. 10’
A qualified worker must be trained and have the ability to recognize ? .
Select one:
a. energized parts
b. grounded lines
c. hazardous situations
d. various protective devices
a. energized parts
A qualified individual understands that all conductors must be ? .
Select one:
a. considered energized until proven to be otherwise
b. grounded before testing for voltage
c. tested for continuity before energizing
d. tested twice to verify voltage
a. considered energized until proven to be otherwise
The normal operating voltage of electrical equipment must be determined by workers ? . Select one: a. before work begins b. from previous knowledge c. when it is convenient to do so d. while work is in progress
a. before work begins
Objects that are (insulated) from ground are ? .
Select one:
a. conductive and can be expected to be energized
b. considered grounded
c. protected from an overvoltage event
d. safe to handle
a. conductive and can be expected to be energized
Conductors are the part of an electrical system that carries electrical current.
Select one:
True
False
True
Electrical circuits may be in a(n) ? configuration.
Select one:
a. conductive
b. inductive or capacitive
c. transformation
d. wye or delta
d. wye or delta
The neutral conductors are normally connected to the ? .
Select one:
a. ground
b. guy wires
c. insulators
d. lightning arresters
a. ground
The parts of an electrical system used to isolate conductive (energized) material from other parts are called ? .
Select one:
a. grounded devices
b. insulators
c. protective devices
d. stand offs
b. insulators
The operating voltage of an insulator can be determined by the ? , its length, or its height.
Select one:
a. insulators’ material make-up
b. number of layers (skirts)
c. pin type
d. support design
b. number of layers (skirts)
The piece of equipment used to step the voltage up or down in an electrical system is called a ? .
Select one:
a. capacitor
b. regulator
c. transformer
d. transmission line
c. transformer
When a voltage condition occurs that is higher than the designed voltage for the system, a(n) ? becomes a path to ground.
Select one:
a. arrester
b. capacitor
c. switching station
d. transformer
a. arrester
Guy wires cannot become energized because they are tied to rods in the earth.
Select one:
True
False
False
The connection point between an underground cable and an overhead conductor is normally made through a ? .
Select one:
a. capacitor
b. pothead
c. splice
d. transit point
b. pothead
Ways to determine the actual operating voltage of a power line include asking an authorized company representative, observing nameplate information, and ? .
Select one:
a. checking the size of insulators
b. fuzzing the line
c. tracing the line back to the substation
d. using test instruments
d. using test instruments
The approach distance to a 12,000-volt line phase-to-phase is ? .
Select one:
a. 2’ 2”
b. 2’ 7”
c. 2’ 10”
d. 3’ 6”
a. 2’ 2”
The electrical factor distance and human factor distance are also called the ? .
Select one:
a. design factor difference
b. minimum approach distance
c. minimum insulator factor
d. nominal factor distance
b. minimum approach distance
The term nominal voltage means the ? .
Select one:
a. average voltage on a circuit
b. highest voltage a circuit carries
c. lowest voltage a circuit normally carries
d. normal operating voltage
d. normal operating voltage
A Qualified Electrical Worker must be ? .
Select one:
a. able to determine the nominal voltage of exposed live parts
b. part of a random drug/alcohol testing program
c. physically fit for the job
d. trained by the IBEW
a. able to determine the nominal voltage of exposed live parts
Most electrical conductors are made of copper, aluminum, or ? in older systems.
Select one:
a. brass
b. nickel
c. silver
d. steel
d. steel
The device used to automatically raise or lower the primary voltage of a line to ensure its optimal voltage range is a ? .
Select one:
a. breaker
b. recloser
c. regulator
d. transformer
c. regulator
A capacitor stores electrical energy.
Select one:
True
False
True
Insulators installed in guy wires are intended to protect ? .
Select one:
a. a climber from making a ground contact
b. people and equipment on the ground
c. the ground rod from electrolysis
d. the pole or structure from becoming energized
b. people and equipment on the ground
