KNOWN NERC EXAM QUESTIONS:
From Class
A 50 MVA generator is currently producing 40 MWs and 10 MVARs. What are the dynamic
reactive reserves presently on this generator?
A) 50
b) 30
c) zero
d) 20 - ANS-d) 20
A Balancing Authority has a Frequency Bias Setting of -200 MW/.1Hz. What is the Balancing
Authority's Frequency Response for a frequency of fifty nine.95 Hz?
A) 10 MWs
b) 50 MWs
c) one hundred MWs
d) 200 MWs - ANS-c) 100 MWs
A Balancing Authority is scheduled to get hold of 300 MWs from the north and 400 MWs from
the south for hour ending 1300. The north time table is curtailed starting at 1220 with a
ten-minute ramp. What is the Net Interchange for the hour?
A) 450 MWh
b) 500 MWh
c) 550 MWh
d) six hundred MWh - ANS-b) 500 MWh
A Balancing Authority notices that Operating Reserve has progressively declined in the course
of the hour. What is the maximum possibly purpose?
A) Loss of a big generator inside the place
b) An faulty load forecast
c) Loss of a primary transmission line
d) A malfunction of EMS - ANS-b) An misguided load forecast
A Balancing Authority gets an Operating Instruction from its Reliability Coordinator. The
Balancing Authority need to follow the Operating Instruction until:
a) It results in separation from the Interconnection
, b) The Balancing Authority disagrees with it
c) Has severe financial implications
d) Results in danger - ANS-d) Results in danger
A contingency outcomes within the exceedence of an IROL. What will be the result if the IROL
is allowed to be surpassed longer than its Tv?
A) Loss of electricity to a local vicinity
b) The transmission line may want to fail
c) Protective relays should fail
d) Interruption of power to a large a part of the BES - ANS-d) Interruption of power to a large a
part of the BES
A observe shows that a single contingency would bring about an IROL violation and the
corrective motion might require starting a breaker and not using a SCADA manipulate due to a
failed RTU. What need to the machine operator do first?
A ) Dispatch discipline personnel to the breakers substation
b) Shed load near the IROL location
c) Re-dispatch era to reduce line loading
d) Develop a new response plan for the contingency - ANS-a ) Dispatch subject employees to
the breakers substation
A System Operator is accomplishing switching operations. When he opens one stop of a
transmission line, there's a demonstration of load loss. What need to the operator do?
A) Continue with the switching operation and check out whilst whole
b) Suspend the switching operation and verify indicators
c) Immediately near the breaker back in
d) File a report to NERC for lack of firm load - ANS-b) Suspend the switching operation and
verify indicators
A transaction of a hundred MWs is scheduled out of your area at the top of the hour with a
10-minute ramp. You have the subsequent era to be had: What mixture of technology might
want to be used?
Generator________MWs_________ Curren MWs________ Ramp Capability
1_____________________100 MW______50 MW________________5 MW/min
2____________________100 MW______40 MW________________3 MW/min
3____________________100 MW______50 MW________________1 MW/min
4____________________100 MW______60 MW________________2 MW/min
a) Generators 1, 2 & three
b) Generators 1, 3 & four
From Class
A 50 MVA generator is currently producing 40 MWs and 10 MVARs. What are the dynamic
reactive reserves presently on this generator?
A) 50
b) 30
c) zero
d) 20 - ANS-d) 20
A Balancing Authority has a Frequency Bias Setting of -200 MW/.1Hz. What is the Balancing
Authority's Frequency Response for a frequency of fifty nine.95 Hz?
A) 10 MWs
b) 50 MWs
c) one hundred MWs
d) 200 MWs - ANS-c) 100 MWs
A Balancing Authority is scheduled to get hold of 300 MWs from the north and 400 MWs from
the south for hour ending 1300. The north time table is curtailed starting at 1220 with a
ten-minute ramp. What is the Net Interchange for the hour?
A) 450 MWh
b) 500 MWh
c) 550 MWh
d) six hundred MWh - ANS-b) 500 MWh
A Balancing Authority notices that Operating Reserve has progressively declined in the course
of the hour. What is the maximum possibly purpose?
A) Loss of a big generator inside the place
b) An faulty load forecast
c) Loss of a primary transmission line
d) A malfunction of EMS - ANS-b) An misguided load forecast
A Balancing Authority gets an Operating Instruction from its Reliability Coordinator. The
Balancing Authority need to follow the Operating Instruction until:
a) It results in separation from the Interconnection
, b) The Balancing Authority disagrees with it
c) Has severe financial implications
d) Results in danger - ANS-d) Results in danger
A contingency outcomes within the exceedence of an IROL. What will be the result if the IROL
is allowed to be surpassed longer than its Tv?
A) Loss of electricity to a local vicinity
b) The transmission line may want to fail
c) Protective relays should fail
d) Interruption of power to a large a part of the BES - ANS-d) Interruption of power to a large a
part of the BES
A observe shows that a single contingency would bring about an IROL violation and the
corrective motion might require starting a breaker and not using a SCADA manipulate due to a
failed RTU. What need to the machine operator do first?
A ) Dispatch discipline personnel to the breakers substation
b) Shed load near the IROL location
c) Re-dispatch era to reduce line loading
d) Develop a new response plan for the contingency - ANS-a ) Dispatch subject employees to
the breakers substation
A System Operator is accomplishing switching operations. When he opens one stop of a
transmission line, there's a demonstration of load loss. What need to the operator do?
A) Continue with the switching operation and check out whilst whole
b) Suspend the switching operation and verify indicators
c) Immediately near the breaker back in
d) File a report to NERC for lack of firm load - ANS-b) Suspend the switching operation and
verify indicators
A transaction of a hundred MWs is scheduled out of your area at the top of the hour with a
10-minute ramp. You have the subsequent era to be had: What mixture of technology might
want to be used?
Generator________MWs_________ Curren MWs________ Ramp Capability
1_____________________100 MW______50 MW________________5 MW/min
2____________________100 MW______40 MW________________3 MW/min
3____________________100 MW______50 MW________________1 MW/min
4____________________100 MW______60 MW________________2 MW/min
a) Generators 1, 2 & three
b) Generators 1, 3 & four
