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
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%
What is EHV? - CORRECT ANSWER✅✅✅Extra high voltage. Classified as 345kv and above
Any generator that is a PJM generation capacity resource that has an RPM Resource Commitment: -
CORRECT ANSWER✅✅✅1. Must submit an offer schedule into the DA market even if it is self-
scheduled or unavailable due to outage
2. Generation capacity resources shall submit:
-A schedule of availability for the next seven days
-May submit non-binding offer prices for the days beyond the next Operating Day
What time period is the Market Participant Bid/Offer Period? - CORRECT ANSWER✅✅✅0800-1100
What time are DA Market results posted? - CORRECT ANSWER✅✅✅1330
What time period is the re-bid period? - CORRECT ANSWER✅✅✅1330-1415
What is the maximum for a generation capacity resource offer? - CORRECT
ANSWER✅✅✅$2000/MWh
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
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%
What is EHV? - CORRECT ANSWER✅✅✅Extra high voltage. Classified as 345kv and above
Any generator that is a PJM generation capacity resource that has an RPM Resource Commitment: -
CORRECT ANSWER✅✅✅1. Must submit an offer schedule into the DA market even if it is self-
scheduled or unavailable due to outage
2. Generation capacity resources shall submit:
-A schedule of availability for the next seven days
-May submit non-binding offer prices for the days beyond the next Operating Day
What time period is the Market Participant Bid/Offer Period? - CORRECT ANSWER✅✅✅0800-1100
What time are DA Market results posted? - CORRECT ANSWER✅✅✅1330
What time period is the re-bid period? - CORRECT ANSWER✅✅✅1330-1415
What is the maximum for a generation capacity resource offer? - CORRECT
ANSWER✅✅✅$2000/MWh
