PJM Generation Operation Exam
Question and answers already passed
2025/2026
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
Question and answers already passed
2025/2026
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
