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NERC RC Exam Prep – Reliability Coordinator Test Questions & Correct Answers

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This document contains actual exam preparation questions and verified answers for the NERC RC (Reliability Coordinator) certification exam. Topics include Power Transfer Distribution Factors (PTDFs) for identifying interchange transactions affecting constrained paths, System Operating Limits (SOLs) vs. IROLs, communication protocols (COM-002-4 – English language, three-part communication: issue, repeat back, acknowledge), telecommunications redundancy requirements, Operating Instructions (definition, repeat back verbatim only major components required), event reporting (EOP-004 – reportable events: automatic load shed ≥100 MW, BES emergencies including voltage reduction, public appeal, manual load shed, control center threats), reporting timelines (by end of next business day for partial separation/reconnection), analysis tools unavailability mitigation, real-time monitoring data requirements (generator/transmission status, MW/MVAR output), Operational Planning Analysis (identify potential SOLs, ensure resources sufficient), Contingency Reserve Restoration Period (begins at end of Disturbance Recovery Period), ACE calculation (ACE = (NIA–NIS) – 10B(FA–FS) – IME; IME corrects meter errors), CPS1 requirement (≥100% over 12 months, Frequency Bias Setting, automatic time error correction in Western Interconnection), Governor response (droop settings, deadband prevents response to small frequency variations), generator response to frequency deviation (5% droop example: 59.94 Hz → 10 MW increase on 300 MW unit), contingency analysis tools using Line Outage Distribution Factors (LODFs), reactive power and voltage control (shunt capacitors for inductive loads, reactors for high voltage, MVAR output varies with voltage squared – 50 MVAR cap at 230 kV provides 40 MVAR at 207 kV), GMD events (geomagnetic induced currents enter through grounded transformers, K-index ≥7, G-5 storm potential for transformer damage, system collapse), restoration plans (EOP-005, Transmission Operator responsibility, drills as requested, Blackstart Resource testing every 3 years), and underfrequency load shed (protects system, prevents generator tripping).

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Page 1 of 123




NERC RC EXAM PREP EXAM
QUESTIONS AND CORRECT DETAILED
ANSWERS
VERIFIED SOLUTIONS LATEST EXAM UPDATE




Power Transfer Distribution Factors help System
Operators _____________. (Select the best answer)


A. determine which Interchange Transactions may be affecting a
constrained path.
B. determine power needs of the Balancing Authorities that
purchased it.
C. estimate the effort of outaged transmission element(s)
D. determine a generator's impact on a flowgate. - ✔✔✔
Correct Answer > A. determine which Interchange Transactions may
be affecting a constrained path.


A(n) ___________ is the value that satisfies the most limiting of
the prescribed operating criteria for a specified system

,Page 2 of 123




configuration to ensure operation within acceptable reliability
criteria.


A. System Operating Limit
B. Interconnection Reliability Operating Limits
C. System Overloading Limit

D. Circuit Overload - ✔✔✔ Correct Answer > A. System Operating
Limit


Each Reliability Coordinator, Transmission Operator, Generator
Operator, and Balancing Authority shall have internal
Interpersonal Communication capabilities for the exchange of
information necessary for the Reliable Operation of the Bulk
Electric System (BES). These include communication
capabilities between Control Centers and field personnel, as well
as which of the following?


A. RCIS
B. Internally
C. Control Centers within the same functional entity

,Page 3 of 123




D. All Control Centers - ✔✔✔ Correct Answer > C. Control Centers
within the same functional entity


Where applicable, telecommunications facilities shall utilize
different infrastructure. Which of the following is also required
of these facilities?


A. State of the art
B. Redundancy
C. Solid state

D. Resplendency - ✔✔✔ Correct Answer > B. Redundancy


What does NERC's concern with communications systems
center mostly on?


A. Backup systems
B. Reliability
C. Cost
D .Training - ✔✔✔ Correct Answer > B. Reliability

, Page 4 of 123




Which language has been established for all communications
between and among operating personnel responsible for real-
time generation control and operations of the Interconnected
Bulk electric system?


A. Spanish
B .English/French
C. English/Spanish
D. English - ✔✔✔ Correct Answer > D. English


Each control room should test its telecommunications facilities.
Special attention should be given to emergency
telecommunications facilities as well as what other equipment?


A. Broadband communication channels
B. Relay switches
C. Equipment not used for routine communications
D. Short-wave radios - ✔✔✔ Correct Answer > C. Equipment not used
for routine communications

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