PJM GENERATION DISPATCHER EXAM
PRACTICE 2025 QUESTIONS AND
ANSWERS
An EXCITER on a traditional generator does what? - ANS Voltage regulation (AVR) if you
change the excitation current, you change the voltage.
ECO Min, ECO Max, and EMERG Max are genrator _________________. - ANS Limits
When synchronizing to the interconnection, what needs to be synchronized? -
ANS Frequency, Voltage, and phase angle.
GMD (GeoMagnetic Disturbance) procedure is implemented when? - ANS 10A or greater is
measured by special equipment at Missouri Ave or Meadowbrook and the measurement is
confirmed by one of the following other sources: Excess transformer current @ Meadowbrook,
Beddington, Donbs, or Black Oak, high MVAR requirements on transformers @ Hopw Creek or
Salem nuclear subs, or high DC measurements @ Limerick or Peach Bottom.
What are the 2 types of National Terrorism Advisory Alerts? - ANS Elevated and Imminent.
What action does PJM take for a terrorist attack, fuel delivery emergency, or GMD's? -
ANS Conservative Operations
What does PJM put the most emphasis on during a terrorist/sabotage event? -
ANS Operations and Communications
What does PJM request during a low voltage alert? - ANS RRC - reactive reserve check
Copyright ©2025 BRIGHTSTARS ALL RIGHTS RESERVED 1
, PJM issues a Heavy Load Voltage Warning how many hours prior to implementation? - ANS 4
hours
What should generation owners/operators do during a High System Voltage Action? -
ANS Operate at the lower bandwidth of the voltage schedule.
How many hours do you have to report a 24-hr reportable NERC disturbance? - ANS 6 hours
What report is generated during a Max Emergency Gen Alert? - ANS SSR - Supplementary
Status Report
What part of the SSR is the Fuel Limited Resources accounted for? - ANS Part G Resource
Limited Units which are units that are not able to run at max capacity for more than 72 hours.
What kind of Emergency Procedures occur during real time operating hours? - ANS Actions
What is the per Unit (p.u.) for a 345 kV nominal voltage that is currently at 348 kV? -
ANS 348/345 = 1.008 pu
What is the Emergency Reducible Generation (ERG) if the Eco Min is 100 and the Emergency
Min is 75? - ANS Eco Min - Emerg Min = 25MW
How many Black Start units are required for critical load/TO zone? - ANS 2 Black Start units
What is the minimum amount of hours for fuel supply for Black Start units? - ANS 10 hours,
must notify PJM when it reaches that level.
Regulation must be attainable within how many minutes? - ANS 5
Copyright ©2025 BRIGHTSTARS ALL RIGHTS RESERVED 2
PRACTICE 2025 QUESTIONS AND
ANSWERS
An EXCITER on a traditional generator does what? - ANS Voltage regulation (AVR) if you
change the excitation current, you change the voltage.
ECO Min, ECO Max, and EMERG Max are genrator _________________. - ANS Limits
When synchronizing to the interconnection, what needs to be synchronized? -
ANS Frequency, Voltage, and phase angle.
GMD (GeoMagnetic Disturbance) procedure is implemented when? - ANS 10A or greater is
measured by special equipment at Missouri Ave or Meadowbrook and the measurement is
confirmed by one of the following other sources: Excess transformer current @ Meadowbrook,
Beddington, Donbs, or Black Oak, high MVAR requirements on transformers @ Hopw Creek or
Salem nuclear subs, or high DC measurements @ Limerick or Peach Bottom.
What are the 2 types of National Terrorism Advisory Alerts? - ANS Elevated and Imminent.
What action does PJM take for a terrorist attack, fuel delivery emergency, or GMD's? -
ANS Conservative Operations
What does PJM put the most emphasis on during a terrorist/sabotage event? -
ANS Operations and Communications
What does PJM request during a low voltage alert? - ANS RRC - reactive reserve check
Copyright ©2025 BRIGHTSTARS ALL RIGHTS RESERVED 1
, PJM issues a Heavy Load Voltage Warning how many hours prior to implementation? - ANS 4
hours
What should generation owners/operators do during a High System Voltage Action? -
ANS Operate at the lower bandwidth of the voltage schedule.
How many hours do you have to report a 24-hr reportable NERC disturbance? - ANS 6 hours
What report is generated during a Max Emergency Gen Alert? - ANS SSR - Supplementary
Status Report
What part of the SSR is the Fuel Limited Resources accounted for? - ANS Part G Resource
Limited Units which are units that are not able to run at max capacity for more than 72 hours.
What kind of Emergency Procedures occur during real time operating hours? - ANS Actions
What is the per Unit (p.u.) for a 345 kV nominal voltage that is currently at 348 kV? -
ANS 348/345 = 1.008 pu
What is the Emergency Reducible Generation (ERG) if the Eco Min is 100 and the Emergency
Min is 75? - ANS Eco Min - Emerg Min = 25MW
How many Black Start units are required for critical load/TO zone? - ANS 2 Black Start units
What is the minimum amount of hours for fuel supply for Black Start units? - ANS 10 hours,
must notify PJM when it reaches that level.
Regulation must be attainable within how many minutes? - ANS 5
Copyright ©2025 BRIGHTSTARS ALL RIGHTS RESERVED 2
