PJM Generation Operation Exam 2025
Questions and Answers
Control center facilities must have a minimum of how many days of fuel for the
backup generator? - --CORRECT ANSWER--5 days
If PJM ACE shows overgeneration, actual imports are: - --CORRECT ANSWER--
Less than scheduled
Who should a generator contact at PJM to clear an outage ticket? - --CORRECT
ANSWER--Master Coordinator
To correct for a slow or fast clock, system frequency schedules are offset by: - --
CORRECT ANSWER--+/-.02 Hz
What frequency would PJM set to correct for fast-time error? - --CORRECT
ANSWER--59.98Hz
What frequency would PJM set to correct for slow-time error? - --CORRECT
ANSWER--60.02Hz
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, What info is on an instantaneous reserve check? - --CORRECT ANSWER--
synchronized (regulating and non-regulating), quick start, secondary and beyond
secondary reserves
Generators must provide PJM with a realistic Reactive Capability Curve. This
curve must have no less than __ points, and no more than __ points. - --
CORRECT ANSWER--No less than 2 and no more than 8 points
A classic indicator of voltage instability is when system voltages change greatly
when... - --CORRECT ANSWER--system loads change by a small amount
Above the line of a D-curve... - --CORRECT ANSWER--Lagging (pushing
VARs). Generators will be set there during high-load/low voltage conditions.
Below the line of a D-curve... - --CORRECT ANSWER--Leading (absorbing
VARs). Generators will be set there during low load/high voltage conditions.
MWs and MVARs have what kind of relationship? - --CORRECT ANSWER--
Inverse (increase in MW = decrease in MVARs)
How often do generators need to test reactive power capability? - --CORRECT
ANSWER--Every 5 years
The computer hardware and software at each control center shall achieve an
availability level of what for those reliability functions directly affect the successful
operation of PJM? - --CORRECT ANSWER--99.95%
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
Questions and Answers
Control center facilities must have a minimum of how many days of fuel for the
backup generator? - --CORRECT ANSWER--5 days
If PJM ACE shows overgeneration, actual imports are: - --CORRECT ANSWER--
Less than scheduled
Who should a generator contact at PJM to clear an outage ticket? - --CORRECT
ANSWER--Master Coordinator
To correct for a slow or fast clock, system frequency schedules are offset by: - --
CORRECT ANSWER--+/-.02 Hz
What frequency would PJM set to correct for fast-time error? - --CORRECT
ANSWER--59.98Hz
What frequency would PJM set to correct for slow-time error? - --CORRECT
ANSWER--60.02Hz
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, What info is on an instantaneous reserve check? - --CORRECT ANSWER--
synchronized (regulating and non-regulating), quick start, secondary and beyond
secondary reserves
Generators must provide PJM with a realistic Reactive Capability Curve. This
curve must have no less than __ points, and no more than __ points. - --
CORRECT ANSWER--No less than 2 and no more than 8 points
A classic indicator of voltage instability is when system voltages change greatly
when... - --CORRECT ANSWER--system loads change by a small amount
Above the line of a D-curve... - --CORRECT ANSWER--Lagging (pushing
VARs). Generators will be set there during high-load/low voltage conditions.
Below the line of a D-curve... - --CORRECT ANSWER--Leading (absorbing
VARs). Generators will be set there during low load/high voltage conditions.
MWs and MVARs have what kind of relationship? - --CORRECT ANSWER--
Inverse (increase in MW = decrease in MVARs)
How often do generators need to test reactive power capability? - --CORRECT
ANSWER--Every 5 years
The computer hardware and software at each control center shall achieve an
availability level of what for those reliability functions directly affect the successful
operation of PJM? - --CORRECT ANSWER--99.95%
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
