PJM Transmission Test Exam Questions
and Answers Graded A+
When is Manual Load Dump Warning issued? - Correct answer-available primary
reserve capacity is less than the largest operating generator or the loss of a
transmission facility jeopardizes reliable operations after all other possible
measures are taken to increase reserve
Why is a Voltage Reduction used? - Correct answer-PJM dispatcher issues the
order for a 5% voltage reduction on the DISTRIBUTION system. Used to increase
transmission system voltages by lowering the distribution system voltages
When is Primary Reserve Warning issued? - Correct answer-The purpose of the
Primary Reserve Warning is to warn members that the available primary reserve is
less than required and present operations are becoming critical. It is implemented
when available primary reserve capacity is less than the primary reserve
requirement, but greater than the synchronized reserve requirement.
At what Frequency (Hz) do generators trip offline due to under frequency? -
Correct answer-57.5 Hz
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, When is Minimum Generation Alert issued? - Correct answer-Minimum
Generation Alert is implemented when the expected generation level is within
2,500 MW of normal minimum energy limits.
Under normal conditions, when is a generator considered Fuel Limited
Generation? How many hours of run time left? - Correct answer-Generally, any
fuel or resource restricted unit (< 72 burn hours at max capacity, see Section
6 of this manual) should be classified as Fuel Limited Generation.
What category should Furl Limited Resources be placed in during a Cold or Hot
Weather Alert? - Correct answer-Units bid to the PJM Market when Conservative
Operations/Cold or Hot Weather Alert have been declared and PJM Dispatch
requests Fuel Limited Resources be placed into the Maximum Emergency
Generation Category.
At what projected temperature will PJM issue a Hot Weather Alert? - Correct
answer-90 degrees F or more
What locations does PJM monitor for Solar Magnetic Disturbances? How many
amps measurement is required? - Correct answer-Solar Magnetic Disturbances
geomagnetic storm is detected that produces a DC measurement at Missouri
Avenue in Atlantic City and/or Meadow Brook Station near Winchester, Virginia at
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
and Answers Graded A+
When is Manual Load Dump Warning issued? - Correct answer-available primary
reserve capacity is less than the largest operating generator or the loss of a
transmission facility jeopardizes reliable operations after all other possible
measures are taken to increase reserve
Why is a Voltage Reduction used? - Correct answer-PJM dispatcher issues the
order for a 5% voltage reduction on the DISTRIBUTION system. Used to increase
transmission system voltages by lowering the distribution system voltages
When is Primary Reserve Warning issued? - Correct answer-The purpose of the
Primary Reserve Warning is to warn members that the available primary reserve is
less than required and present operations are becoming critical. It is implemented
when available primary reserve capacity is less than the primary reserve
requirement, but greater than the synchronized reserve requirement.
At what Frequency (Hz) do generators trip offline due to under frequency? -
Correct answer-57.5 Hz
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, When is Minimum Generation Alert issued? - Correct answer-Minimum
Generation Alert is implemented when the expected generation level is within
2,500 MW of normal minimum energy limits.
Under normal conditions, when is a generator considered Fuel Limited
Generation? How many hours of run time left? - Correct answer-Generally, any
fuel or resource restricted unit (< 72 burn hours at max capacity, see Section
6 of this manual) should be classified as Fuel Limited Generation.
What category should Furl Limited Resources be placed in during a Cold or Hot
Weather Alert? - Correct answer-Units bid to the PJM Market when Conservative
Operations/Cold or Hot Weather Alert have been declared and PJM Dispatch
requests Fuel Limited Resources be placed into the Maximum Emergency
Generation Category.
At what projected temperature will PJM issue a Hot Weather Alert? - Correct
answer-90 degrees F or more
What locations does PJM monitor for Solar Magnetic Disturbances? How many
amps measurement is required? - Correct answer-Solar Magnetic Disturbances
geomagnetic storm is detected that produces a DC measurement at Missouri
Avenue in Atlantic City and/or Meadow Brook Station near Winchester, Virginia at
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
