NERC RC PREPARATION FREQUENTLY TESTED
ACTUAL EXAM QUESTIONS WITH CORRECT
ANSWERS
Question 1.
What % for governor deadband?
ANSWER
+/- .036 Hz (the governor
will not respond to frequency changes smaller than 0.036 Hz)
Question 2.
How long does BA have to recover ACE?
ANSWER
15 minutes
Question 3.
What usually causes low voltage?
ANSWER
heavy power flows on transmission lines
Question 4.
Heavily loaded transmission lines are ___.
ANSWER
Inductive/absorb MVAR
,Question 5.
Supervisory Control and Data Acquisition
ANSWER
SCADA
Question 6.
On a classic disturbance chart, what brings frequency from point c to d?
ANSWER
Contingency Reserve
Question 7.
A positive GSF means ___ generation.
ANSWER
decrease
Question 8.
___ will be more erratic during restoration.
ANSWER
Frequency (maintain 59.75-61 Hz)
Question 9.
What type of transformer is most likely to be impacted by a GMD?
ANSWER
high-side wye-grounded transformer
,Question 10.
Voltage should always be ±___% of nominal.
ANSWER
5
Question 11.
What level EEA? Load management procedures are in effect.
ANSWER
EEA 2
Question 12.
___ are not reactive resources; they effectively lengthen or shorten the transmission line.
ANSWER
Series capacitors and Series reactors
Question 13.
OE-417 or EOP-004 Attachment 1 must be used for what?
ANSWER
Reporting reportable events
Question 14.
When are isochryonous generators used?
ANSWER
one unit, during islanding
Question 15.
CTs provide ___ indication.
ANSWER
current
, Question 16.
Who issues TLRs (Transmission Loading Relief)?
ANSWER
RC
Question 17.
Unit for Apparent Power
ANSWER
VA (volt-amperes)
Question 18.
Phase Shifting Transformers (PSTs) are used to change ___ by changing the power angle.
ANSWER
Real power flow
Question 19.
P-V curve is used to determine what?
ANSWER
Point of system instability because of voltage collapse
Question 20.
What are cranking paths?
ANSWER
Paths used to start up other generating units during restoration; usually shorter lines
Question 21.
Motor load represents ___% of total load.
ANSWER
70%
ACTUAL EXAM QUESTIONS WITH CORRECT
ANSWERS
Question 1.
What % for governor deadband?
ANSWER
+/- .036 Hz (the governor
will not respond to frequency changes smaller than 0.036 Hz)
Question 2.
How long does BA have to recover ACE?
ANSWER
15 minutes
Question 3.
What usually causes low voltage?
ANSWER
heavy power flows on transmission lines
Question 4.
Heavily loaded transmission lines are ___.
ANSWER
Inductive/absorb MVAR
,Question 5.
Supervisory Control and Data Acquisition
ANSWER
SCADA
Question 6.
On a classic disturbance chart, what brings frequency from point c to d?
ANSWER
Contingency Reserve
Question 7.
A positive GSF means ___ generation.
ANSWER
decrease
Question 8.
___ will be more erratic during restoration.
ANSWER
Frequency (maintain 59.75-61 Hz)
Question 9.
What type of transformer is most likely to be impacted by a GMD?
ANSWER
high-side wye-grounded transformer
,Question 10.
Voltage should always be ±___% of nominal.
ANSWER
5
Question 11.
What level EEA? Load management procedures are in effect.
ANSWER
EEA 2
Question 12.
___ are not reactive resources; they effectively lengthen or shorten the transmission line.
ANSWER
Series capacitors and Series reactors
Question 13.
OE-417 or EOP-004 Attachment 1 must be used for what?
ANSWER
Reporting reportable events
Question 14.
When are isochryonous generators used?
ANSWER
one unit, during islanding
Question 15.
CTs provide ___ indication.
ANSWER
current
, Question 16.
Who issues TLRs (Transmission Loading Relief)?
ANSWER
RC
Question 17.
Unit for Apparent Power
ANSWER
VA (volt-amperes)
Question 18.
Phase Shifting Transformers (PSTs) are used to change ___ by changing the power angle.
ANSWER
Real power flow
Question 19.
P-V curve is used to determine what?
ANSWER
Point of system instability because of voltage collapse
Question 20.
What are cranking paths?
ANSWER
Paths used to start up other generating units during restoration; usually shorter lines
Question 21.
Motor load represents ___% of total load.
ANSWER
70%
