PJM TRANSMISSION 2026 CORE MAIN EOC QUESTIONS
AND ANSWERS SURE A+
✔✔A large unit in an external control area near PJM West trips. The PJM system
operator will see:
1) ACE remain the increases and frequency decrease
2) ACE remain the same and frequency increases
3) ACE remain the decreases and frequency increases
4) ACE remain the same and frequency decrease - ✔✔4
✔✔Tru or False: A tie line with MW flowing into the PJM control area trips. System
Operator will see: ACE and the frequency remain the same - ✔✔True
✔✔How long does PJM have to correct a facility that is operating above the 4 hour
emergency rating?
1) 5 min
2) 15 min
3) 30 min
4) 1 hour - ✔✔2
✔✔What is the minimum notice PJM requires for a non-emergency transmission outage
work request?
1) 6 hours
2) 24 hours
3) 3 working days
4) 7 working days - ✔✔3
✔✔True or False: During Black Start restoration, priority access to cranking power
should be given to: Hot units that can return to service immediately - ✔✔True
✔✔True or False: Which of the following control modes is normally used on PJM
systems to develop an ACE, when control-to-control area tie lines are in service?
Frequency Bias Control - ✔✔False, Tie Line Bias Control
✔✔Increased load on a circuit causes lower voltage at the remote end. What can be
done to increase this voltage?
1) Raise the stepdown transformer tap position
2) Turn reactors on near load
3) Turn capacitors on near generation
4) Set AVR to manual control - ✔✔1
, ✔✔PJM schedules enough generation to coverall of following EXCEPT:
1) Internal Load
2) External Load
3) Interchange
4) Reserve Requirement - ✔✔2
✔✔True or False: If a PJM Member detects or suspects actual or attempted sabotage
on the BES they should: Notify PJM and NERC - ✔✔False, Notify PJM and DOE
✔✔True or False: PJM Member actions during a Primary Reserve Warning include:
Ensuring all deferrable: maintenance, testing affecting capacity or critical transmission is
halted - ✔✔True
✔✔True or False: If presented with an opportunity to reconnect with the Eastern
Interconnection you should? Pursue this opportunity as quick as possible - ✔✔True
✔✔True or False: PJM considers a facility to be in violation of Standard Operating
Limits (SOL) when: Flow is above the normal limit for 24 hours and the Long Term
Emergency limit for 4 hours - ✔✔True
✔✔Black Start Generator should be able to close onto a dead bus in:
1) 30 mins
2) 1 hour
3) 3 hours
4) 4 hours - ✔✔3
✔✔What Day is defined as having a decreased load demand based on length and
duration?
1) Weekdays
2) Weekends
3) Holidays
4) Birthdays - ✔✔
✔✔True or False: During extended hot weather events, what can happen?
Transmission lines tend to sag - ✔✔True
✔✔How long does an operator have to correct actual voltages BELOW the emergency
voltage limit but ABOVE the load dump limit?
1) 5 minutes
AND ANSWERS SURE A+
✔✔A large unit in an external control area near PJM West trips. The PJM system
operator will see:
1) ACE remain the increases and frequency decrease
2) ACE remain the same and frequency increases
3) ACE remain the decreases and frequency increases
4) ACE remain the same and frequency decrease - ✔✔4
✔✔Tru or False: A tie line with MW flowing into the PJM control area trips. System
Operator will see: ACE and the frequency remain the same - ✔✔True
✔✔How long does PJM have to correct a facility that is operating above the 4 hour
emergency rating?
1) 5 min
2) 15 min
3) 30 min
4) 1 hour - ✔✔2
✔✔What is the minimum notice PJM requires for a non-emergency transmission outage
work request?
1) 6 hours
2) 24 hours
3) 3 working days
4) 7 working days - ✔✔3
✔✔True or False: During Black Start restoration, priority access to cranking power
should be given to: Hot units that can return to service immediately - ✔✔True
✔✔True or False: Which of the following control modes is normally used on PJM
systems to develop an ACE, when control-to-control area tie lines are in service?
Frequency Bias Control - ✔✔False, Tie Line Bias Control
✔✔Increased load on a circuit causes lower voltage at the remote end. What can be
done to increase this voltage?
1) Raise the stepdown transformer tap position
2) Turn reactors on near load
3) Turn capacitors on near generation
4) Set AVR to manual control - ✔✔1
, ✔✔PJM schedules enough generation to coverall of following EXCEPT:
1) Internal Load
2) External Load
3) Interchange
4) Reserve Requirement - ✔✔2
✔✔True or False: If a PJM Member detects or suspects actual or attempted sabotage
on the BES they should: Notify PJM and NERC - ✔✔False, Notify PJM and DOE
✔✔True or False: PJM Member actions during a Primary Reserve Warning include:
Ensuring all deferrable: maintenance, testing affecting capacity or critical transmission is
halted - ✔✔True
✔✔True or False: If presented with an opportunity to reconnect with the Eastern
Interconnection you should? Pursue this opportunity as quick as possible - ✔✔True
✔✔True or False: PJM considers a facility to be in violation of Standard Operating
Limits (SOL) when: Flow is above the normal limit for 24 hours and the Long Term
Emergency limit for 4 hours - ✔✔True
✔✔Black Start Generator should be able to close onto a dead bus in:
1) 30 mins
2) 1 hour
3) 3 hours
4) 4 hours - ✔✔3
✔✔What Day is defined as having a decreased load demand based on length and
duration?
1) Weekdays
2) Weekends
3) Holidays
4) Birthdays - ✔✔
✔✔True or False: During extended hot weather events, what can happen?
Transmission lines tend to sag - ✔✔True
✔✔How long does an operator have to correct actual voltages BELOW the emergency
voltage limit but ABOVE the load dump limit?
1) 5 minutes
