NERC Exam Questions | ACCURATE
QUESTIONS AND DETAILED ANSWERS |
GUARANTEED PASS | GRADED A | LATEST
UPDATE 2024-2025 WITH 100+ QUESTIONS
Which MVAR resource device would you normally use first?
a) Shunt capacitor to increase generation reactive reserve
b) Shunt reactors
c) Generator MVAR reserves to maximize capacitor reserve
d) Generator MVAR reserves to minimize system losses
- CORRECT ANS-a) Shunt capacitor to increase generation reactive reserve
Voltage reduction is used for _____ and is implemented on the ______.
a) Reducing load; distribution system
b) Increasing load; transmission system
c) Increasing current flow; distribution system
d) Reducing current flow; transmission system
- CORRECT ANS-b) Increasing load; transmission system
To be effective, reactive resources should be:
a) Centrally located in the system
b) Located close to generation
c) In areas subject to high voltages
,d) Located close to load areas
- CORRECT ANS-d) Located close to load areas
For two identically constructed parallel transmission lines where Line A is 150 miles long and
Line B is 15 miles long, if both lines are lightly loaded, _________.
a) A produces the same reactive power as B
b) B produces more reactive power than A
c) A produces more reactive power than B
d) Neither line produces any reactive power
- CORRECT ANS-c) A produces more reactive power than B
It is generally acceptable for a TO to open a transmission line for which of the following
conditions?
1. Studies indicate there is no potential reliability problem
2. High voltages under light loads
3. Low voltages under heavy loads
4. Under the direction of an RC
a) 1 2 3
b) 1 2 4
c) 1 3 4
d) 2 3 4
- CORRECT ANS-b) 1 2 4
Lightly loaded transmission lines essentially behave like:
a) Shunt reactors
,b) Series Reactors
c) Shunt capacitors
d) Series capacitors
- CORRECT ANS-c) Shunt capacitors
A radial transmission line feeding a load is overloaded. The transmission operator must do
which of the following to unload the line?
a) Lower the voltage on the receiving end
b) Shed load at the end of the line
c) Raise voltage at the receiving end
d) Raise the voltage on the sending end
- CORRECT ANS-b) Shed load at the end of the line
If ∫, v, ø difference are too large to permit breaker closing, a SO should first consider:
a) Changing the voltage SP
b) Notifying the RC
c) Re-dispatching generation
d) Shedding Load
- CORRECT ANS-c) Re-dispatching generation
A portion of a RC Area is experiencing low voltage. What Operating Instructions should the RC
issue?*
a) Lower transfers across the area and decrease generation
b) Increase transfers across the area and decrease generation
c) Lower transfers across the area and increase generation
, d) Increase transfers across the area and increase generation
- CORRECT ANS-c) Lower transfers across the area and increase generation
Which of the following is used to help balance a system after it separates from the
Interconnection during a disturbance?
a) Automatic UFLS
b) Automatic UVLS
c) Generator under-frequency trips
d) Automatic Generation Control (AGC)
- CORRECT ANS-a) Automatic UFLS
A geomagnetic disturbance is predicted to occur tomorrow. Which parts of the system are most
likely to experience problems?
a) HVDC transmission lines
b) Delta connected transformers
c) Wye connected transformers
d) Large Generators
- CORRECT ANS-c) Wye connected transformers
A severe disturbance has caused a total system shutdown. You are in the process of initiating
system restoration procedures. An open all breaker command is an option on your EMS system.
What would be the consequences of using this command?
a) Restoration would take longer
b) Critical substation battery would be depleted
c) Visual inspection is needed prior to breaker operation
QUESTIONS AND DETAILED ANSWERS |
GUARANTEED PASS | GRADED A | LATEST
UPDATE 2024-2025 WITH 100+ QUESTIONS
Which MVAR resource device would you normally use first?
a) Shunt capacitor to increase generation reactive reserve
b) Shunt reactors
c) Generator MVAR reserves to maximize capacitor reserve
d) Generator MVAR reserves to minimize system losses
- CORRECT ANS-a) Shunt capacitor to increase generation reactive reserve
Voltage reduction is used for _____ and is implemented on the ______.
a) Reducing load; distribution system
b) Increasing load; transmission system
c) Increasing current flow; distribution system
d) Reducing current flow; transmission system
- CORRECT ANS-b) Increasing load; transmission system
To be effective, reactive resources should be:
a) Centrally located in the system
b) Located close to generation
c) In areas subject to high voltages
,d) Located close to load areas
- CORRECT ANS-d) Located close to load areas
For two identically constructed parallel transmission lines where Line A is 150 miles long and
Line B is 15 miles long, if both lines are lightly loaded, _________.
a) A produces the same reactive power as B
b) B produces more reactive power than A
c) A produces more reactive power than B
d) Neither line produces any reactive power
- CORRECT ANS-c) A produces more reactive power than B
It is generally acceptable for a TO to open a transmission line for which of the following
conditions?
1. Studies indicate there is no potential reliability problem
2. High voltages under light loads
3. Low voltages under heavy loads
4. Under the direction of an RC
a) 1 2 3
b) 1 2 4
c) 1 3 4
d) 2 3 4
- CORRECT ANS-b) 1 2 4
Lightly loaded transmission lines essentially behave like:
a) Shunt reactors
,b) Series Reactors
c) Shunt capacitors
d) Series capacitors
- CORRECT ANS-c) Shunt capacitors
A radial transmission line feeding a load is overloaded. The transmission operator must do
which of the following to unload the line?
a) Lower the voltage on the receiving end
b) Shed load at the end of the line
c) Raise voltage at the receiving end
d) Raise the voltage on the sending end
- CORRECT ANS-b) Shed load at the end of the line
If ∫, v, ø difference are too large to permit breaker closing, a SO should first consider:
a) Changing the voltage SP
b) Notifying the RC
c) Re-dispatching generation
d) Shedding Load
- CORRECT ANS-c) Re-dispatching generation
A portion of a RC Area is experiencing low voltage. What Operating Instructions should the RC
issue?*
a) Lower transfers across the area and decrease generation
b) Increase transfers across the area and decrease generation
c) Lower transfers across the area and increase generation
, d) Increase transfers across the area and increase generation
- CORRECT ANS-c) Lower transfers across the area and increase generation
Which of the following is used to help balance a system after it separates from the
Interconnection during a disturbance?
a) Automatic UFLS
b) Automatic UVLS
c) Generator under-frequency trips
d) Automatic Generation Control (AGC)
- CORRECT ANS-a) Automatic UFLS
A geomagnetic disturbance is predicted to occur tomorrow. Which parts of the system are most
likely to experience problems?
a) HVDC transmission lines
b) Delta connected transformers
c) Wye connected transformers
d) Large Generators
- CORRECT ANS-c) Wye connected transformers
A severe disturbance has caused a total system shutdown. You are in the process of initiating
system restoration procedures. An open all breaker command is an option on your EMS system.
What would be the consequences of using this command?
a) Restoration would take longer
b) Critical substation battery would be depleted
c) Visual inspection is needed prior to breaker operation
