NERC CERTIFICATION EXAM LATEST 2025-2026 ACTUAL
REAL EXAM QUESTIONS AND ANSWERS WITH A
PRACTICE EXAM TESTBANK AND STUDY GUIDE VERIFIED
AND ACCURATE FOR GUARANTEED PASS.
1. Which control system on the generators would respond to a
drop in system freq resulting from the loss of generation?
a. Generator governor control system
b. Differential relay systems
c. Special protection systems
d. Automatic Voltage Regulators
answer- a. Generator governor control system
2. Load increases or decreases in relation to the increase or
decrease in frequency. It has been determined that for every 1%
change in freq, load will change approx ______% iin the same
direction in an Interconnected system.
a. 1
b. 2
c. 5
d. 3
answer- b. 2 (3 if it is pure motor load)
,3. A BA has several units on governor control. The units have
different capacities that range from 200 MW to 1000 MW and
droop settings from 2% to 5%. The biggest adjustments in MW
output in response to a freq disturbance will be provided by
units that have __________.
a. large capacity; large droop setting
b. large capacity; small droop setting
c. small capacity; large droop setting
d. small capacity; small droop setting
answer- b. large capacity; small droop setting
4. A BA that is operating asynchronously (separated from the
interconnection) should switch its AGC to which mode?
a. tie line bias control
b flat tie line control
c. flat frequency control
d. manual control
answer- c. flat frequency control
,5. If the BA selling power to an end user enters the wrong
schedule for the upcoming hour, which part of the ACE equatio
[ACE = (NIA - NIS) - 10B(FA - FS) - IME], will cause
Inadvertent Interchange to occur as the result of the incorrect
shedule?
a. Both the Interchange and freq portions will contribute (NIA -
NIS) - 10B(FA - FS)
b. Only the interchange portion (NIA - NIS) will contribute
c. Only the freq portion -10B(FA-FS) will contribute
d. Neither will contribute
answer- b. Only the interchange portion (NIA - NIS) will
contribute
6. Inadvertent interchange accumulations that are paid back by
controlling to a target of non-zero ACE and is limited by the
BA's L10 is known as ________.
a. bilateral payback
b. selective payback
c. transmission payback
d. unilateral payback
answer- d. unilateral payback
, 7. A BA has an average ACE of -75MW during one clock ten-
minute period. There L10 is 50MW. Which NERC Control
Performance Standard has been violated?
a. CPS1
b. CPS2
c. DCS
d. SOL
answer- b. CPS2
8. The ACE equation must include metered data: dynamic
schedules, pseudo ties, actual frequency, and all ___________.
a. Generation
b. Transformers
c. Tie lines
d. Communications
answer- c. Tie Lines
REAL EXAM QUESTIONS AND ANSWERS WITH A
PRACTICE EXAM TESTBANK AND STUDY GUIDE VERIFIED
AND ACCURATE FOR GUARANTEED PASS.
1. Which control system on the generators would respond to a
drop in system freq resulting from the loss of generation?
a. Generator governor control system
b. Differential relay systems
c. Special protection systems
d. Automatic Voltage Regulators
answer- a. Generator governor control system
2. Load increases or decreases in relation to the increase or
decrease in frequency. It has been determined that for every 1%
change in freq, load will change approx ______% iin the same
direction in an Interconnected system.
a. 1
b. 2
c. 5
d. 3
answer- b. 2 (3 if it is pure motor load)
,3. A BA has several units on governor control. The units have
different capacities that range from 200 MW to 1000 MW and
droop settings from 2% to 5%. The biggest adjustments in MW
output in response to a freq disturbance will be provided by
units that have __________.
a. large capacity; large droop setting
b. large capacity; small droop setting
c. small capacity; large droop setting
d. small capacity; small droop setting
answer- b. large capacity; small droop setting
4. A BA that is operating asynchronously (separated from the
interconnection) should switch its AGC to which mode?
a. tie line bias control
b flat tie line control
c. flat frequency control
d. manual control
answer- c. flat frequency control
,5. If the BA selling power to an end user enters the wrong
schedule for the upcoming hour, which part of the ACE equatio
[ACE = (NIA - NIS) - 10B(FA - FS) - IME], will cause
Inadvertent Interchange to occur as the result of the incorrect
shedule?
a. Both the Interchange and freq portions will contribute (NIA -
NIS) - 10B(FA - FS)
b. Only the interchange portion (NIA - NIS) will contribute
c. Only the freq portion -10B(FA-FS) will contribute
d. Neither will contribute
answer- b. Only the interchange portion (NIA - NIS) will
contribute
6. Inadvertent interchange accumulations that are paid back by
controlling to a target of non-zero ACE and is limited by the
BA's L10 is known as ________.
a. bilateral payback
b. selective payback
c. transmission payback
d. unilateral payback
answer- d. unilateral payback
, 7. A BA has an average ACE of -75MW during one clock ten-
minute period. There L10 is 50MW. Which NERC Control
Performance Standard has been violated?
a. CPS1
b. CPS2
c. DCS
d. SOL
answer- b. CPS2
8. The ACE equation must include metered data: dynamic
schedules, pseudo ties, actual frequency, and all ___________.
a. Generation
b. Transformers
c. Tie lines
d. Communications
answer- c. Tie Lines
