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NERC EXAM, TEST, PRACTICE EXAM AND STUDY GUIDE LATEST ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+$27.99
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NERC EXAM, TEST, PRACTICE EXAM AND STUDY GUIDE LATEST ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+
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Course
NERC
Institution
NERC
NERC EXAM, TEST, PRACTICE EXAM AND STUDY
GUIDE LATEST ACTUAL EXAM 150
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+
NERC EXAM, TEST, PRACTICE EXAM AND STUDY
GUIDE LATEST ACTUAL EXAM 150
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIO...
NERC EXAM, TEST, PRACTICE EXAM AND STUDY
GUIDE LATEST 2023-2024 ACTUAL EXAM 150
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+
What should a transmission operator do if an SOL or IROL is exceeded? - ANSWER-Inform its RC of the
exceedance and the actions being taken to return the system to within limits.
____ % drop in frequency results in a ____ % drop in total load ( ____ % drop in motor load). - ANSWER-
1%, 2%, 3%
____ % decrease in voltage results in ____ % decrease in load? - ANSWER-5%, 3%
____ % load shed will increase frequency ____ Hz? - ANSWER-6% - 10%, 1 Hz
Manual load shed greater than or equal to ____ MW is reportable? - ANSWER-100 MW
Loss of Firm Load greater than or equal to ____ MW is reportable? - ANSWER-300 MW
Two lines into a BA trip leaving that area islanded. What will likely be the impact to the BES? - ANSWER-
interconnection frequency will increase
Restore load in ____ % blocks of total synchronized generation? Do you count available reserves? -
ANSWER-5%, no
What is the formula for calculating current (amps)? - ANSWER-I = MVA/(sqrt(3)*Vline)
What is the power factor formula? - ANSWER-pf = MW/MVA
What is the formula for the power triangle? - ANSWER-MVA^2 = MW^2 + MVAR^2
, What is the formula for total reactance? - ANSWER-Xtotal = |Xl - Xc|
What is the formula for Capacitor output? - ANSWER-MVARoutput = MVARrated * (Vactual/Vrated)^2
or
MVARoutput = MVARrated * (Vp.u.)^2
What is the formula to calculate power losses? - ANSWER-P = I^2 * R
What is the formula to calculate the number of poles on a generator? - ANSWER-Np = 7200
(where N is synchronous speed in rpms and p is the # of poles)
more complicated version:
f = (N/60)*(p/2)
What is the impact to capacitive reactance when frequency drops significantly in the power system? -
ANSWER-Capacitive reactance will increase
Capacitive: ________ leading ________ - ANSWER-current leading voltage
Inductive: ________ leading ________ - ANSWER-voltage leading current
MVAR travel from ________ to ________. - ANSWER-high voltage to low voltage
MW travel from ________ to ________. - ANSWER-high voltage angle to low voltage angle
If current doubles, power losses ________? - ANSWER-quadruple
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