Page 1 of 168
NERC TRANSMISSION OPERATOR (TOP) EXAM
BANK | {LATEST 2026/ 2027 UPDATE}
COMPLETE ACTUAL AND AUTHENTIC EXAM |
BRAND NEW!
1. 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
b. CPS2
2. The ACE equation must include metered data: dynamic schedules,
pseudo ties, actual frequency, and all ___________.
a. Generation
b. Transformers
c. Tie lines
d. Communications
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c. Tie Lines
3. A BA has a sudden change in demand-supply balance due to a
sudden loss of load or generation in their area. The sudden change
will be seen instantaneously in which calculated value?
a. Frequency
b. system lambda
c. operating reserves
d. ACE
d. ACE
4. An external generator tripped that was large enough to reduce the
frequency from 60.00 Hz to 59.94 Hz. Your BA's Frequency Bias is 200
MW/0.1 Hz. How many MW would your system initially contribute to
frequency support?
a. 80 MW
b. 100 MW
c. 200 MW
d. 120 MW
d. 120 MW
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5. BA-A is currently reading a system freq of 59.95 Hz. Its Net Actual
Interchange is +100 MW and its Net Scheduled Interchange is +120
MW. If BA-A's freq bias setting is -100 Mw, BA-A's AGC is pulsing its
generators to _____________.
a. Remain at current MW output level
b. Increase MW output
c. Decrease MW output
d. Increase excitation on the field windings
b. Increase MW output
6. 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
a. Generator governor control system
, Page 4 of 168
7. 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
b. 2 (3 if it is pure motor load)
8. 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
b. large capacity; small droop setting
NERC TRANSMISSION OPERATOR (TOP) EXAM
BANK | {LATEST 2026/ 2027 UPDATE}
COMPLETE ACTUAL AND AUTHENTIC EXAM |
BRAND NEW!
1. 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
b. CPS2
2. The ACE equation must include metered data: dynamic schedules,
pseudo ties, actual frequency, and all ___________.
a. Generation
b. Transformers
c. Tie lines
d. Communications
,Page 2 of 168
c. Tie Lines
3. A BA has a sudden change in demand-supply balance due to a
sudden loss of load or generation in their area. The sudden change
will be seen instantaneously in which calculated value?
a. Frequency
b. system lambda
c. operating reserves
d. ACE
d. ACE
4. An external generator tripped that was large enough to reduce the
frequency from 60.00 Hz to 59.94 Hz. Your BA's Frequency Bias is 200
MW/0.1 Hz. How many MW would your system initially contribute to
frequency support?
a. 80 MW
b. 100 MW
c. 200 MW
d. 120 MW
d. 120 MW
,Page 3 of 168
5. BA-A is currently reading a system freq of 59.95 Hz. Its Net Actual
Interchange is +100 MW and its Net Scheduled Interchange is +120
MW. If BA-A's freq bias setting is -100 Mw, BA-A's AGC is pulsing its
generators to _____________.
a. Remain at current MW output level
b. Increase MW output
c. Decrease MW output
d. Increase excitation on the field windings
b. Increase MW output
6. 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
a. Generator governor control system
, Page 4 of 168
7. 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
b. 2 (3 if it is pure motor load)
8. 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
b. large capacity; small droop setting
