NERC PREP TEST 101.pdf file:///C:/Users/HP/Desktop/New%20folder/NERC%20PREP%20T
NERC PREP TEST 101 QUESTIONS & VERIFIED
ANSWERS
1. 1. If a 500 kV transmission line with a surge impedance loading of 800 MW is currently
loaded at 1400 MW, which of the following events would most likely occur?
a. Generator MVAR output would increase
b. All system capacitors would trip off-line
c. Generator MVAR output would decrease
d. All automatic reactors would connect to the system
Answer a. Generator MVAR output would increase
2. 2. When system conditions are such that emergency procedures are expect- ed to be
implemented, which of the following actions should be considered first?
a. Shed firm load
b. Implement Active Load Management
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c. Return outaged equipment to service
d. Request a voltage reduction
Answer c. Return outaged equipment to service
3. 3. If your transmission path is rated for 1200 MW and 1000 MW are scheduled on it, but
due to parallel flows the actual flow is 1300 MW, what action should you take?
a. Request that a phase shifting transformer be installed
b. Reduce interchange transactions impacting the path
c. Request all parallel flow to PSEs to increase schedules
d. Reduce all commercial customer load
Answer b. Reduce interchange transactions impacting the path
4. 4. If your system is MVAR deficient, what action could be implemented to prevent
voltage collapse?
a. Raise system frequency above 60.5 Hz
b. Shed firm load in the deficient area
c. Separate from the Interconnection
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d. Lower transmission voltages
Answer b. Shed firm load in the deficient area
5. 5. Which of the following actions can a system operator take in order to maintain
stability on the system?
a. Request generators to absorb maximum MVAR
b. Place all operating limits on dynamic calculation
c. Raise system voltages as high as possible, but within their operating
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parameters
d. Reduce voltages on the transmission system
Answer c. Raise system voltages as high as possible, but within their operating parameters
6. 6. Which of the following actions should you take if an outage on a neigh- boring
system has caused a violation on your system?
a. Open all tie-lines to your neighbor
b. Ask the Reliability Coordinator for assistance
c. Shed load to mitigate the violation
d. Wait for the neighboring system to contact you
Answer b. Ask the Reliability Coordi- nator for assistance
7. 7. If a SOL or IROL violation occurs due to transfers across the system and it is
determined that parallel flows are contributing to the violation, what should the system
operator do?
a. Place all system capacitors in service
b. Reduce system load
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