NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
d) four times greater
When current in an AC
circuit is doubled, power
losses in the circuit will
respond in which way?
a) half as much
b) does not change
c) doubles
d) four times greater
b) Voltage level of the line
What determines the size
of insulators used on
power lines?
a) Current flow on the line
b) Voltage level of the line
c) Reactance of the line
d) Operating Limit of the
line
a) Inductive
Reactive power is needed
to support which type of
load?
a) Inductive
b) Capacitive
c) Impedance
d) Resistive
,NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
c) Disconnect switches
When isolating equipment
in the electrical system,
what device is most often
used as a visual clearance
point?
a) Circuit switchers
b) Fuses
c) Disconnect switches
d) Circuit breakers
a) Electrons that flow on a conductor
What is current?
a) Electrons that flow on a
conductor
b) Electrical pressure
applied to a conductor
c) Sine wave
d) Water flow rate
c) 3 phases
How many phases are
there in most high voltage
power systems?
a) 10 phases
b) 1 phase
c) 3 phases
d) 2 phases
,NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
b) abnormal current flow on an unintended path
What does the term
system fault mean?
a) the physical problem in
a device, component or
element
b) abnormal current flow
on an unintended path
c) a device or component
not operating as designed
d) the fault of the system
for not operating as
designed
a) Line to Ground
What is the most common
type of fault on the power
system?
a) Line to Ground
b) Line to Line
c) Three Phase
d) Phase to Neutral
d) Capacitive
When a high voltage
transmission line is
producing reactive power
due to the conductor
being energized and
lightly loaded, the line
exhibits which
characteristic?
a) Resistive
b) Inductive
c) Lagging
d) Capacitive
, NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
c) For Economics
Why would a power
company purchase
generation from another
company versus
generating themselves to
meet their load?
a) So they can sell at a
profit
b) To create inadvertent
c) For Economics
d) Don't have enough
generation
c) Radial
What is a common type of
substation configuration?
a) Breaker and a half
b) Highway
c) Radial
d) Junction
b) Apparent Power
In normal operations,
which type of power
usually has the largest
magnitude?
a) Real Power
b) Apparent Power
c) Reactive Power
d) Hydro Power
a) Fuel source
How are generators
typically classified in the
power system?
a) Fuel source
b) Cycling capability
c) Capacity
d) Generating voltage
d) four times greater
When current in an AC
circuit is doubled, power
losses in the circuit will
respond in which way?
a) half as much
b) does not change
c) doubles
d) four times greater
b) Voltage level of the line
What determines the size
of insulators used on
power lines?
a) Current flow on the line
b) Voltage level of the line
c) Reactance of the line
d) Operating Limit of the
line
a) Inductive
Reactive power is needed
to support which type of
load?
a) Inductive
b) Capacitive
c) Impedance
d) Resistive
,NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
c) Disconnect switches
When isolating equipment
in the electrical system,
what device is most often
used as a visual clearance
point?
a) Circuit switchers
b) Fuses
c) Disconnect switches
d) Circuit breakers
a) Electrons that flow on a conductor
What is current?
a) Electrons that flow on a
conductor
b) Electrical pressure
applied to a conductor
c) Sine wave
d) Water flow rate
c) 3 phases
How many phases are
there in most high voltage
power systems?
a) 10 phases
b) 1 phase
c) 3 phases
d) 2 phases
,NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
b) abnormal current flow on an unintended path
What does the term
system fault mean?
a) the physical problem in
a device, component or
element
b) abnormal current flow
on an unintended path
c) a device or component
not operating as designed
d) the fault of the system
for not operating as
designed
a) Line to Ground
What is the most common
type of fault on the power
system?
a) Line to Ground
b) Line to Line
c) Three Phase
d) Phase to Neutral
d) Capacitive
When a high voltage
transmission line is
producing reactive power
due to the conductor
being energized and
lightly loaded, the line
exhibits which
characteristic?
a) Resistive
b) Inductive
c) Lagging
d) Capacitive
, NERC RANDOM MULTIPLE QUESTIONS ANSWER KEY
c) For Economics
Why would a power
company purchase
generation from another
company versus
generating themselves to
meet their load?
a) So they can sell at a
profit
b) To create inadvertent
c) For Economics
d) Don't have enough
generation
c) Radial
What is a common type of
substation configuration?
a) Breaker and a half
b) Highway
c) Radial
d) Junction
b) Apparent Power
In normal operations,
which type of power
usually has the largest
magnitude?
a) Real Power
b) Apparent Power
c) Reactive Power
d) Hydro Power
a) Fuel source
How are generators
typically classified in the
power system?
a) Fuel source
b) Cycling capability
c) Capacity
d) Generating voltage
