NERC CERTIFICATION EXAM TEST BANK QUESTIONS AND
VERIFIED ANSWERS LATEST UPDATE 2025
Voltage is high in an area due to off-peak demand. There are several lightly
loaded high voltage transmission lines going to radial loads. All capacitor
banks are out of service. Generators still have reactive reserves both leading
and lagging. What should be done first to lower the voltage?
a) De-energize the lightly loaded lines
b) Use generators to absorb VARs
c) Place capacitor banks in service as needed
d) Increase voltage to increase load -Answer-b) Use generators to absorb
VARs
A 50 MVA generator is currently producing 40 MWs and 10 MVARs. What are
the dynamic reactive reserves currently on this generator?
a) 50
b) 30
c) 0
d) 20 -Answer-d) 20
In the diagram below, all three lines have the same impedance. What will be
the flow on Line 2 if Line 1 is placed in service after an outage?
a) 10 MWs
b) 20 MWs
, c) 30 MWs
d) 60 MWs -Answer-b) 20 MWs
A System Operator is conducting switching operations. When he opens one
end of a transmission line, there is an indication of load loss. What should the
operator do?
a) Continue with the switching operation and investigate when complete
b) Suspend the switching operation and verify indications
c) Immediately close the breaker back in
d) File a report to NERC for loss of firm load -Answer-b) Suspend the
switching operation and verify indications
You have just placed a line in service and the receiving bus end of the line
shows zero voltage, but there is indication of current flow. What is your
primary concern?
a) The low voltage at the bus
b) Loss of synchronizing capability
c) Loss of primary protection
d) A potential voltage collapse -Answer-c) Loss of primary protection
You discovered that Bus A is de-energized. Each of the line breakers off of the
bus are closed. However, the breakers at the other end of each line from the
bus are open. What is the most likely cause for this arrangement?
a) Failure of a Distance Relay
VERIFIED ANSWERS LATEST UPDATE 2025
Voltage is high in an area due to off-peak demand. There are several lightly
loaded high voltage transmission lines going to radial loads. All capacitor
banks are out of service. Generators still have reactive reserves both leading
and lagging. What should be done first to lower the voltage?
a) De-energize the lightly loaded lines
b) Use generators to absorb VARs
c) Place capacitor banks in service as needed
d) Increase voltage to increase load -Answer-b) Use generators to absorb
VARs
A 50 MVA generator is currently producing 40 MWs and 10 MVARs. What are
the dynamic reactive reserves currently on this generator?
a) 50
b) 30
c) 0
d) 20 -Answer-d) 20
In the diagram below, all three lines have the same impedance. What will be
the flow on Line 2 if Line 1 is placed in service after an outage?
a) 10 MWs
b) 20 MWs
, c) 30 MWs
d) 60 MWs -Answer-b) 20 MWs
A System Operator is conducting switching operations. When he opens one
end of a transmission line, there is an indication of load loss. What should the
operator do?
a) Continue with the switching operation and investigate when complete
b) Suspend the switching operation and verify indications
c) Immediately close the breaker back in
d) File a report to NERC for loss of firm load -Answer-b) Suspend the
switching operation and verify indications
You have just placed a line in service and the receiving bus end of the line
shows zero voltage, but there is indication of current flow. What is your
primary concern?
a) The low voltage at the bus
b) Loss of synchronizing capability
c) Loss of primary protection
d) A potential voltage collapse -Answer-c) Loss of primary protection
You discovered that Bus A is de-energized. Each of the line breakers off of the
bus are closed. However, the breakers at the other end of each line from the
bus are open. What is the most likely cause for this arrangement?
a) Failure of a Distance Relay
