NERC RC Exam Prep With 213 Questions and answers Newest 2025/2026

NERC RC Exam Prep With 213 Questions and answers
Newest 2025/2026
When does the Contingency Reserve Restoration Period begin?
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A. At the top of the hour after the Reportable Disturbance
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B. At the start of the Reportable Disturbance
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C. At the end of the Disturbance Recovery Period
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D. When all Contingency Reserve has been exhausted - Correct Answers C. At the end of the
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Disturbance Recovery Period
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Il` Which of the following terms is defined as the scan rate values of a Balancing Authority's ACE
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Il` measured in MW, which includes the difference between the Balancing Authority's Net
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Il` Interchange Actual and its Net Interchange Scheduled, plus its Frequency Bias obligation, plus any
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Il` known meter error? Il` Il`




A. Automatic Time Error
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B. Reporting ACE
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C. ACE Control Error
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D. Reserve Sharing Group Reporting - Correct Answers B. Reporting ACE
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Il` Which of the following terms applies to the Western Interconnection only, and the addition of a
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Il` component to the ACE equation that modifies the control point for the purpose of continuously
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Il` paying back Primary Inadvertent Interchange to correct accumulated time error?
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A. Reporting ACE
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B. Automatic Time Error Correction
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C. Reserve Sharing Group Reporting ACE
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,D. Regulation Reserve Sharing Group - Correct Answers B. Automatic Time Error Correction
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Il` You are a Balancing Authority Operator. A neighboring Balancing Authority in the Interconnection
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Il` suddenly has a 500 MW generator trip due to a generator ground. What part of the ACE equation,
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Il` ACE = (NIA-NIS) - 10B (FA-FS) - IME, allows you and other Balancing Authorities in the
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Il` Interconnection to help stabilize the Interconnection frequency error? Il` Il` Il` Il` Il` Il` Il`




A. (FA- FS) - IME
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B. NIA - NIS
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C. 10B (FA-FS)
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D. 4 IME - Correct Answers C. 10B (FA-FS)
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Il` Balancing Authority A is scheduled to import a net 200 MW and is actually importing a net 150
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Il` MW. The Bias Setting is -100 MW/.1 HZ and Actual Frequency is 59.95 Hz. What is Balancing
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Il` Authority A's ACE reading? Il` Il` Il`




A. +100 MW
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B. -100 MW
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C. 0 MWIl` Il`




D. -55 MW - Correct Answers C. 0 MW
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Il` Which of the following elements is NOT included in the ACE equations frequency component?
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A. Actual Frequency (FA)
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B. Scheduled Frequency (FS)
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C. Frequency Bias Setting (B)
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D. Meter Error (IME) - Correct Answers D. Meter Error (IME)
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,Il` A Balancing Authority is slightly undergenerating its Actual System Frequency (FA) is 60.03 Hz.
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Il` What is the result of the Balancing Authority's action?
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A. The Balancing Authority is helping the Interconnection Frequency.
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B. The Balancing Authority is in CPS1 violation.
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C. The Balancing Authority is hurting the Interconnection Frequency.
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D. The Balancing Authority is in BAAL violation - Correct Answers A. The Balancing Authority is
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helping the Interconnection Frequency
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Il` Which statement best describes the CPS1 requirement?
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A. ACE must follow changes in load and schedule within a bandwidth called L10.
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B. The Responsible Entity must operate so its CPS1 is greater than or equal to 100% for the
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preceding 12-month period.
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C. The average ACE for a defined 10-minute period must be within a limit called L10.
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D. ACE must start to return to zero one minute after crossing zero. - Correct Answers B. The
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Responsible Entity must operate so its CPS1 is greater than or equal to 100% for the preceding 12-
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month period Il`




Il` A Balancing Authority's CPS1 calculation is computed using its clock-minute average of two
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Il` values. What are those two values?
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A. Reporting ACE and Frequency Error
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B. Actual and Scheduled Net Interchange NIA and NIS.
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C. L10 and Reporting ACE
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D. Actual and Scheduled Frequency (FA and FS) - Correct Answers A. Reporting ACE and
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Frequency Error
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, Il` To conform to CPS requirements, a Balancing Authority must have which of the following?
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A. CPS1 greater than or equal to 90% or BAAL greater than or equal to 100%.
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B. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than 15 consecutive
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minutes.
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C. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than 30 consecutive
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minutes.
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D. CPS1 greater than or equal to 90% and ACE does not exceed BAAL more than 30 consecutive
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minutes. - Correct Answers C. CPS1 greater than or equal to 100% and ACE does not exceed
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BAAL more than 30 consecutive minutes.
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Il` What should a Balancing Authority set Scheduled Frequency to for a slow Time Error Correction?
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A. 60.02 Hz
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B. 59.98 Hz
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C. 59.80 Hz
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D. 60.20 Hz - Correct Answers A. 60.02 Hz
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Il` Which of the following is a potential source of Contingency Reserve?
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1. Offline generation that takes 10 minutes to start and ramp to full output
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2. Online generation at full load
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3. Controllable load resources
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4. Voltage reductions
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A. 3 and 4
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B. 2 and 3
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