NERC Exam UPDATED Exam Questions
and CORRECT Answers
ACE equation - CORRECT ANSWER -(NIA-NIS)-10B(fa-fs)-IME
Net Interchange Scheduled (NIS) - CORRECT ANSWER -sum of all interchange
schedules
Net Interchange Schedule (NIS) - CORRECT ANSWER -sum of all interchange schedules
multiplier for frequency bias is _______ - CORRECT ANSWER -10
frequency bias (B) - CORRECT ANSWER -represented as a negative number in ACE
Calculation and reflects area natural response to frequency changes (Inertia, governor & load). Is
at least 1% of peak load for areas with native load & 1% if peak generation output of area with
no load.
If unable to calculate ACE for ________ contact the RC. - CORRECT ANSWER -30 mins
what happens when you have internal generation lost? - CORRECT ANSWER -Frequency
and ACE drop and tie-line flows increase into your system
what happens with external generation lost? - CORRECT ANSWER -Frequency Drop
with no change in ACE and net ti-line flows increase out of your system.
Internal loss of load - CORRECT ANSWER -Frequency and ACE increase
External loss of load - CORRECT ANSWER -Frequency increases with no change in
ACE
, Frequency Actual (fa) - CORRECT ANSWER -
Frequency Schedule (fs) - CORRECT ANSWER -normally 60HZ except for time
corrections +/- .02HZ
Flat Frequency (Constant Frequency) is used when - CORRECT ANSWER -tie-line data
is unavailable/ islanded situations
Flat Tie-Line (Constant Frequency) is used when - CORRECT ANSWER -frequency data
is unavailable - restoration
Net Interchange Actual (NIA) - CORRECT ANSWER -sum of all tie-line values
Net Interchange Actual (NIA) - CORRECT ANSWER -sum of all tie-line values
Multiplier for frequency Bias - CORRECT ANSWER -10
Tie-Line Bias (Tie-Line Frequency Bias) is used - CORRECT ANSWER -for both tie-line
and frequency data and used at all times unless detrimental to operation of system.
Under what EEA is all available resources in service and concern with maintaining reserves.
Requiring actions to attempt to boost supply, bring In generation, reduce non-firm exports and
purchase interchange? - CORRECT ANSWER -EEA 1
What EEA includes anticipating the lack of ability to meet demand, attempt to reduce obligation,
voltage reduction & public appeal? - CORRECT ANSWER -EEA 2
Under what EEA is the interruption of firm load imminent? - CORRECT ANSWER -EEA
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and CORRECT Answers
ACE equation - CORRECT ANSWER -(NIA-NIS)-10B(fa-fs)-IME
Net Interchange Scheduled (NIS) - CORRECT ANSWER -sum of all interchange
schedules
Net Interchange Schedule (NIS) - CORRECT ANSWER -sum of all interchange schedules
multiplier for frequency bias is _______ - CORRECT ANSWER -10
frequency bias (B) - CORRECT ANSWER -represented as a negative number in ACE
Calculation and reflects area natural response to frequency changes (Inertia, governor & load). Is
at least 1% of peak load for areas with native load & 1% if peak generation output of area with
no load.
If unable to calculate ACE for ________ contact the RC. - CORRECT ANSWER -30 mins
what happens when you have internal generation lost? - CORRECT ANSWER -Frequency
and ACE drop and tie-line flows increase into your system
what happens with external generation lost? - CORRECT ANSWER -Frequency Drop
with no change in ACE and net ti-line flows increase out of your system.
Internal loss of load - CORRECT ANSWER -Frequency and ACE increase
External loss of load - CORRECT ANSWER -Frequency increases with no change in
ACE
, Frequency Actual (fa) - CORRECT ANSWER -
Frequency Schedule (fs) - CORRECT ANSWER -normally 60HZ except for time
corrections +/- .02HZ
Flat Frequency (Constant Frequency) is used when - CORRECT ANSWER -tie-line data
is unavailable/ islanded situations
Flat Tie-Line (Constant Frequency) is used when - CORRECT ANSWER -frequency data
is unavailable - restoration
Net Interchange Actual (NIA) - CORRECT ANSWER -sum of all tie-line values
Net Interchange Actual (NIA) - CORRECT ANSWER -sum of all tie-line values
Multiplier for frequency Bias - CORRECT ANSWER -10
Tie-Line Bias (Tie-Line Frequency Bias) is used - CORRECT ANSWER -for both tie-line
and frequency data and used at all times unless detrimental to operation of system.
Under what EEA is all available resources in service and concern with maintaining reserves.
Requiring actions to attempt to boost supply, bring In generation, reduce non-firm exports and
purchase interchange? - CORRECT ANSWER -EEA 1
What EEA includes anticipating the lack of ability to meet demand, attempt to reduce obligation,
voltage reduction & public appeal? - CORRECT ANSWER -EEA 2
Under what EEA is the interruption of firm load imminent? - CORRECT ANSWER -EEA
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