PJM Sample TO Exam 100% Accurate
What is the minimum notice PJM requires for a nonemergency transmission outage
work request which does not cause congestion?
A. 48 hours
B. First day of month proceeding the month of the outage
C. 5 working days
D. 1 week - ANSWER B. First day of month proceeding the month of the outage
A system load is 3000MW. To increase frequency by 1 Hz, how much load should be
she?
A. 80MW
B. 180MW
C. 350MW
D. 500MW - ANSWER B. 180MW
When thunderstorms are in the vicinity of a critical bulk power transmission facility, the
system operator should
A. ensure automatic reclosing is in service
B. place bulk power capacitors in service
C. remove bulk power capacitors from service
D. request generators on 500KV systems bring VAR output to 0 - ANSWER A. ensure
automatic reclosing is in service
Which of the following actions would be FIRST to control a reactive transfer limit
violation?
A. place reactors in service
B. Load off-cost(out of merit) generation
C. issue load dump warning
D. Modify firm transactions - ANSWER B. Load off-cost(out of merit) generation
What is the minimum connected load that should be carried per mile of energized
500KV line during restoration?
A. 10MW
B. 15MW
C. 20MW
D. 25MW - ANSWER C. 20MW
When available primary reserve capacity on a system is less than the largest operating
generator, or the loss of a transmission facility jeopardizes reliable operations, PJM
should issue a
A. manual load dump warning
B. maximum emergency generation
C. voltage reduction warning
D. primary reserve alert - ANSWER A. manual load dump warning
, The maximum allowable voltage on the PJM 500KV system is
A. 520KV
B. 538KV
C. 550KV
D. 557KV - ANSWER C. 550KV
Increased load on a circuit causes lower voltage at the remote end. Which of the
following will increase the voltage?
A. Switch off the distribution capacitors
B. Raise the generation supply
C. Raise the step down transformer tap position
D. Switch additional load to this circuit - ANSWER C. Raise the step down transformer
tap position
Which of the following factors are used in forecasting load?
A. weather forecast, historical load data, and generator availability
B. weather forecast, historical load data, and historical weather data
C. weather forecast, historical load data, and scheduled outages
D. historical load data, historical weather data, and voltage schedules - ANSWER B.
weather forecast, historical load data, and historical weather data
When synchronizing isolated areas, which of the following conditions must be met?
1. Similar frequency
2. Similar voltage
3. Matching load
4. Minimum phase angle difference
a) 1, 2, and 3 only
b) 1, 2, and 4 only
c) 1, 3, and 4 only
d) 2, 3, and 4 only - ANSWER b) 1, 2, and 4 only
A real time security analysis contingency or actual overload is
a) Immediately reported to NERC
b) Reported to operations planning
c) Bad data
d) Immediately communicated to the PJM transmission dispatcher - ANSWER d)
Immediately communicated to the PJM transmission dispatcher
PJM has issued a heavy load voltage schedule. Which of the following is NOT an
appropriate PJM member action in response to this alert?
a) Ensure that all unit voltage regulators are in service
b) Ensure that all unit voltage regulators are in manual mode
c) Ensure that all reactors are out of service and available capacitors are in service
What is the minimum notice PJM requires for a nonemergency transmission outage
work request which does not cause congestion?
A. 48 hours
B. First day of month proceeding the month of the outage
C. 5 working days
D. 1 week - ANSWER B. First day of month proceeding the month of the outage
A system load is 3000MW. To increase frequency by 1 Hz, how much load should be
she?
A. 80MW
B. 180MW
C. 350MW
D. 500MW - ANSWER B. 180MW
When thunderstorms are in the vicinity of a critical bulk power transmission facility, the
system operator should
A. ensure automatic reclosing is in service
B. place bulk power capacitors in service
C. remove bulk power capacitors from service
D. request generators on 500KV systems bring VAR output to 0 - ANSWER A. ensure
automatic reclosing is in service
Which of the following actions would be FIRST to control a reactive transfer limit
violation?
A. place reactors in service
B. Load off-cost(out of merit) generation
C. issue load dump warning
D. Modify firm transactions - ANSWER B. Load off-cost(out of merit) generation
What is the minimum connected load that should be carried per mile of energized
500KV line during restoration?
A. 10MW
B. 15MW
C. 20MW
D. 25MW - ANSWER C. 20MW
When available primary reserve capacity on a system is less than the largest operating
generator, or the loss of a transmission facility jeopardizes reliable operations, PJM
should issue a
A. manual load dump warning
B. maximum emergency generation
C. voltage reduction warning
D. primary reserve alert - ANSWER A. manual load dump warning
, The maximum allowable voltage on the PJM 500KV system is
A. 520KV
B. 538KV
C. 550KV
D. 557KV - ANSWER C. 550KV
Increased load on a circuit causes lower voltage at the remote end. Which of the
following will increase the voltage?
A. Switch off the distribution capacitors
B. Raise the generation supply
C. Raise the step down transformer tap position
D. Switch additional load to this circuit - ANSWER C. Raise the step down transformer
tap position
Which of the following factors are used in forecasting load?
A. weather forecast, historical load data, and generator availability
B. weather forecast, historical load data, and historical weather data
C. weather forecast, historical load data, and scheduled outages
D. historical load data, historical weather data, and voltage schedules - ANSWER B.
weather forecast, historical load data, and historical weather data
When synchronizing isolated areas, which of the following conditions must be met?
1. Similar frequency
2. Similar voltage
3. Matching load
4. Minimum phase angle difference
a) 1, 2, and 3 only
b) 1, 2, and 4 only
c) 1, 3, and 4 only
d) 2, 3, and 4 only - ANSWER b) 1, 2, and 4 only
A real time security analysis contingency or actual overload is
a) Immediately reported to NERC
b) Reported to operations planning
c) Bad data
d) Immediately communicated to the PJM transmission dispatcher - ANSWER d)
Immediately communicated to the PJM transmission dispatcher
PJM has issued a heavy load voltage schedule. Which of the following is NOT an
appropriate PJM member action in response to this alert?
a) Ensure that all unit voltage regulators are in service
b) Ensure that all unit voltage regulators are in manual mode
c) Ensure that all reactors are out of service and available capacitors are in service
