PJM Sample Test Review Questions And
Answers |Latest 2025 | Guaranteed Pass
Real time transmission constraints or contingencies may be alleviated with generators
operating ______________ - Answer✔off cost out of merit.
Monitoring ___________ may give insights into system constraints. - Answer✔Monitoring
LMP's
PJM calls for _____________ reserves to recover ace so that tie line schedules are maintained. -
Answer✔PJM calls on synchronized reserves
If not cancelled by PJM, the minimum generation alert expires at the end of the specified
______________. - Answer✔light load period
When PJM declares a hot weather alert, the generation dispatcher should determine if
maintenance can be deferred and notify all generating stations and key personnel. - Answer✔
During system restoration, the two categories of reserves are dynamic and spinning. - Answer✔
During system restoration, frequency should be maintained between 59.75 and 61.00 Hertz. -
Answer✔
PJM issues a heavy load voltage schedule. Member companies who own generation facilities
should ensure voltage regulators on generating units are in service & automatic. - Answer✔
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A unit being dispatched economically by PJM should set its megawatt output based on the
unit's dispatch rate or desired megawatt level. - Answer✔
A fossil steam unit is considered fuel limited when it is not capable of running at its maximum
capacity for the next 72 hours - Answer✔
During system restoration prior to synchronization of a unit, the dispatcher should ensure
sufficient load is available to stabilize unit operation. - Answer✔
A large unit in an external control area near PJM/PJM West trips. The PJM operator will see ace
remain the same, frequency decrease. - Answer✔
LMPs will change when marginal generator output changes - Answer✔
The two control signals sent by the PJM E M S are regulation and dispatch rate (desired MW
output). - Answer✔
An all-call is the one-way communication system used to disseminate information to market
operation centers. - Answer✔
Real time bus prices may be monitored using data viewer. - Answer✔
Not offering an available PJM capacity resource into the day ahead market is a violation of PJMs
two settlement market rules. - Answer✔
A unit that fails to start when scheduled, would be classified as an unplanned outage. -
Answer✔
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Maximum Generation Emergency is declared by PJM when generation is required above the
highest incremental economic cost. - Answer✔
Maintenance outages are permitted when a unit can be held online until the following Monday,
and system reliability is not affected - Answer✔
If PJM ace shows over-generation, actual imports are less than scheduled. - Answer✔
PJM will request a Supplementary Status Report when a Maximum Generation Emergency Alert
is issued. - Answer✔
If a fossil steam unit has less than 32 hours of fuel at maximum capacity, it should be bid at
maximum emergency. - Answer✔
The loss of a large generation unit on the PJM system can be detected by monitoring frequency
and PJM ace. - Answer✔
A 1000 megawatt unit has tripped in the PJM control area and the PJM ace now indicates
under-generation of 1050 Megawatt. PJM should request 100% synchronized reserves be
loaded. - Answer✔
Alerts are issued in advance of a scheduled load period to allow sufficient time for the
generation dispatcher to prepare for the anticipated capacity shortages - Answer✔
The amount of synchronized reserves must be large enough to cover the loss of the largest
single energy contingency. - Answer✔
When preparing a supplementary status report (SSR), a steam unit that has 30 hours of fuel
remaining. This unit should be reported as a resource limited unit. - Answer✔
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