PJM Test Questions with complete
solution 2025/2026
Which of the following balancing control modes is used by PJM under normal
operations? - correct answer ✔Tie-Line Bias
Which of the following influences does PJM consider when performing their
system load forecast? - correct answer ✔Weather Conditions & Day of the
Week
All of the following are limits that must be submitted to PJM for generating
units EXCEPT:
1. Eco Min
2. Eco Max
3. Emergency Max
4. Dynamic Instability - correct answer ✔Dynamic Instability
If PJM experienced an event that caused the loss of a 1,000 MW generator,
which of the following would most likely provide the quickest impact to
improve the undegenerating Area Control Area (ACE)?
1. Remedial Action Reserve
2. Synch Reserve
3. Non-Synch Reserve
4. Secondary Reserve - correct answer ✔Synch Reserve
,Your system has experienced an event that caused the frequency to drop
below 60.00 Hz, what would be the most likely event that occurred? - correct
answer ✔A generator on your system tripped offline
How does the PJM dispatcher inform the Members of the PJM regulation
Requirements? - correct answer ✔All-Call
In order for your generator to quality to supply regulation in the PJM
Regulation market, it must be able to respond and attain its desired output
within how many minutes? - correct answer ✔5 minutes
Based on a generator capability curve, in order to maximize the MVAR output
of the generator, it may be necessary to: - correct answer ✔decrease the
MW output of the unit
PJM maintains a regulation quality standard which states that a generator
may be certified to provide regulation only after it achieves three consecutive
regulation test scores of at least - correct answer ✔75%
Which of the following would NOT be a cause for a sudden deviation in the
balancing area ACE?
1. incorrect interchange number
2. loss of a tie-line RTU
3. loss of internal load
4. loss of adjacent control area generation - correct answer ✔loss of
adjacent control area generation
The primary purpose for the balancing area to have Regulation is to correct
for: - correct answer ✔small deviations in load
,It is necessary for Generation Owner dispatchers to notify PJM of unplanned
unit outages: - correct answer ✔as soon as practicable
PJM should be made aware of any fuel shortage that a generator may
experience.
This information assists in analyzing the resources and reliably operating the
system. A heightened awareness is expected during: - correct answer
✔extreme hot or cold conditions
Generators are required to obtain PJM approval prior to removing a
generating unit from service.
The only exception is for: - correct answer ✔injury to personnel will be
prevented
Prior to removing a self-scheduled generator from service, the PJM member
must first - correct answer ✔give PJM the option to takeover the unit for the
market
When PJM experiences problems with their primary digital control signal, it
sometimes becomes necessary for companies with the capability, to switch to
the back-up signal.
This backup signal is known as: - correct answer ✔Analog control
When PJM sends cost signals to generators, to provide direction for
increasing or decreasing the facility output, this signal that is sent is known as:
- correct answer ✔Dispatch Rate
, Under normal operating conditions, what is the limit that will provide the lowest
output level of a generating unit? - correct answer ✔Eco Min
When PJM send out a cost signal to generators to adjust their output, the
generating personnel adjust the output of the unit base on the unit's - correct
answer ✔price or cost curve incremental
Which eSuite tool is used to maintain individual generator regulation data that
is submitted by PJM members? - correct answer ✔eMarket
PJM's ACE configuration is such, that when the ACE is positive (+), it
indicates - correct answer ✔too much generation
If a generator is self-scheduled, what is the minimum notification time required
in order for the MW output to be adjusted? - correct answer ✔20 minutes
prior to the change
When corrections are made for the time error and the system scheduled
frequency must be changed to implement the correction, how much is the
frequency scheduled adjusted by? - correct answer ✔+ /- 0.02 Hz
When PJM runs their Regulation test, how long do the tests normally run? -
correct answer ✔40 minutes
Your system has a 300 MW steam unit, but due to oil deliveries, the on-site
fuel supply is diminishing.
solution 2025/2026
Which of the following balancing control modes is used by PJM under normal
operations? - correct answer ✔Tie-Line Bias
Which of the following influences does PJM consider when performing their
system load forecast? - correct answer ✔Weather Conditions & Day of the
Week
All of the following are limits that must be submitted to PJM for generating
units EXCEPT:
1. Eco Min
2. Eco Max
3. Emergency Max
4. Dynamic Instability - correct answer ✔Dynamic Instability
If PJM experienced an event that caused the loss of a 1,000 MW generator,
which of the following would most likely provide the quickest impact to
improve the undegenerating Area Control Area (ACE)?
1. Remedial Action Reserve
2. Synch Reserve
3. Non-Synch Reserve
4. Secondary Reserve - correct answer ✔Synch Reserve
,Your system has experienced an event that caused the frequency to drop
below 60.00 Hz, what would be the most likely event that occurred? - correct
answer ✔A generator on your system tripped offline
How does the PJM dispatcher inform the Members of the PJM regulation
Requirements? - correct answer ✔All-Call
In order for your generator to quality to supply regulation in the PJM
Regulation market, it must be able to respond and attain its desired output
within how many minutes? - correct answer ✔5 minutes
Based on a generator capability curve, in order to maximize the MVAR output
of the generator, it may be necessary to: - correct answer ✔decrease the
MW output of the unit
PJM maintains a regulation quality standard which states that a generator
may be certified to provide regulation only after it achieves three consecutive
regulation test scores of at least - correct answer ✔75%
Which of the following would NOT be a cause for a sudden deviation in the
balancing area ACE?
1. incorrect interchange number
2. loss of a tie-line RTU
3. loss of internal load
4. loss of adjacent control area generation - correct answer ✔loss of
adjacent control area generation
The primary purpose for the balancing area to have Regulation is to correct
for: - correct answer ✔small deviations in load
,It is necessary for Generation Owner dispatchers to notify PJM of unplanned
unit outages: - correct answer ✔as soon as practicable
PJM should be made aware of any fuel shortage that a generator may
experience.
This information assists in analyzing the resources and reliably operating the
system. A heightened awareness is expected during: - correct answer
✔extreme hot or cold conditions
Generators are required to obtain PJM approval prior to removing a
generating unit from service.
The only exception is for: - correct answer ✔injury to personnel will be
prevented
Prior to removing a self-scheduled generator from service, the PJM member
must first - correct answer ✔give PJM the option to takeover the unit for the
market
When PJM experiences problems with their primary digital control signal, it
sometimes becomes necessary for companies with the capability, to switch to
the back-up signal.
This backup signal is known as: - correct answer ✔Analog control
When PJM sends cost signals to generators, to provide direction for
increasing or decreasing the facility output, this signal that is sent is known as:
- correct answer ✔Dispatch Rate
, Under normal operating conditions, what is the limit that will provide the lowest
output level of a generating unit? - correct answer ✔Eco Min
When PJM send out a cost signal to generators to adjust their output, the
generating personnel adjust the output of the unit base on the unit's - correct
answer ✔price or cost curve incremental
Which eSuite tool is used to maintain individual generator regulation data that
is submitted by PJM members? - correct answer ✔eMarket
PJM's ACE configuration is such, that when the ACE is positive (+), it
indicates - correct answer ✔too much generation
If a generator is self-scheduled, what is the minimum notification time required
in order for the MW output to be adjusted? - correct answer ✔20 minutes
prior to the change
When corrections are made for the time error and the system scheduled
frequency must be changed to implement the correction, how much is the
frequency scheduled adjusted by? - correct answer ✔+ /- 0.02 Hz
When PJM runs their Regulation test, how long do the tests normally run? -
correct answer ✔40 minutes
Your system has a 300 MW steam unit, but due to oil deliveries, the on-site
fuel supply is diminishing.
