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NERC TRANSMISSION OPERATOR (TOP) NEWEST 2026 ACTUAL EXAM| NERC TOP SYSTEM OPERATIONS EXAM REVIEW WITH COMPLETE REAL EXAM QUESTIONS AND CORECT VERIFIED ANSWERS/ ALREADY GRADED A+ (BRAND NEW!!) 1. According to NERC standards, the primary responsibility of a Transmission Operator (TOP) is to: - A) Ensure the Balancing Authority maintains ACE within limits - B) Operate the transmission system within IROLs and SOLs « C) Schedule interchange transactions « D) Maintain primary frequency response Correct Answer: B Rationale: The TOP’s core responsibility is real-time monitoring and control of the transmission system to ensure reliability within Interconnection Reliability Operating Limits (IROLs) and System Operating Limits (SOLs). 2. A Transmission Operator must notify its Reliability Coordinator (RC) within how many minutes of discovering an SOL or IROL violation? - A) Immediately, but no more than 15 minutes - B) 30 minutes + C) 60 minutes « D) 120 minutes Correct Answer: B Rationale: NERC TOP-002-4 requires the TOP to notify the RC within 30 minutes of identifying a violation of an SOL or IROL, unless corrected within that timeframe. 3. If an IROL is exceeded, the TOP must initiate a remedy within: + A) 15 minutes - B) 30 minutes « C) 45 minutes - D) 60 minutes Correct Answer: B Rationale: Per TOP-001-4, if an IROL is exceeded, the TOP must level a facility can withstand without breaching thermal, voltage, or stability criteria. 6. The TOP has the authority to curtail or interrupt firm transmission service when: - A) It is economically beneficial - B) Directed by the Balancing Authority « C) Necessary to maintain system reliability « D) Requested by a neighboring TOP Correct Answer: C Rationale: Per TOP-001-4, reliability trumps commercial arrangements. The TOP may curtail firm transmission service if needed to prevent an IROL violation. 7. Which entity is responsible for ensuring that the TOP has current SOLs and IROLs? - A) Balancing Authority « B) Planning Authority ¢ C) Reliability Coordinator « D) Transmission Planner Correct Answer: D (or Planning Authority) — NERC standard PRC- 023 & TOP-001 cite Planning Authority. Rationale: The Transmission Planner or Planning Authority develops and provides SOLs/IROLs to the TOP. 8. The TOP must ensure that its operating personnel are trained on reliability standards within: - A) 3 months of hire - B) 6 months of hire - C)1 year of hire - D) 2 years of hire Correct Answer: C Rationale: PER-005-2 requires TOP operators to be NERC- certified and trained annually, but initial qualification within 1 year. 9. Which of the following is a valid reason for a TOP to request an Operating Instruction from the RC? - A) To increase interchange sales - B) To reduce generation for economic dispatch + C)To prevent an SOL violation Correct Answer: B Rationale: Both the TOP and RC perform real-time contingency analysis (RCA). The TOP uses RCA to prevent SOL violations. 12. An IROL is defined as: - A) Any thermal limit + B) An SOL whose violation could lead to cascading blackouts - C)A voltage limit used for planning - D)A short-term rating Correct Answer: B Rationale: IROLs are SOLs whose violation could result in instability, uncontrolled separation, or cascading outages. 13. The TOP must monitor which of the following to ensure reliability? - A) Generation output only « B) Transmission line loadings, voltages, and reactive resources « C) Load forecasts only - D) Fuel inventories Correct Answer: B Rationale: TOP-001-4 requires monitoring of real-time flows, voltage levels, and reactive resources (capacitors, reactors, SVCs). 14. If the TOP observes voltage collapse trending, the first action should be: - A) Shed firm load - B) Request RC to reduce imports « C) Deploy reactive resources (capacitors, raise generator voltages) - D) Open transmission lines Correct Answer: C Rationale: NERC VAR standards direct the TOP to use reactive resources before load shedding to correct voltage. 15. The Reliability Coordinator has authority to direct the TOP to take actions that: + A) Violate TOP's operating procedures - B) Are necessary to maintain reliability across the interconnection - D) Weather forecasting Correct Answer: B Rationale: TOP-005-4 requires coordination on voltage, phase angles, and flowgates across inter-TOP boundaries. 18. When a transmission line trips due to a relay operation, the TOP shall: - A) Immediately reclose the breaker + B) Evaluate system for SOL/IROL violations and notify RC + C) Reduce generation in the area by 50% - D) Ignore if load is normal Correct Answer: B Rationale: Standard TOP-003-4 requires assessment of remaining system after contingency. 19. The TOP is required to have an Operating Plan for: « A) Normal operations only - B) Normal, emergency, and restoration - C) Emergency only - D) Black start only 10 Correct Answer: B Rationale: EOP-005, EOP-006, and TOP-001 require plans for all three phases. 20. A “Reliability Coordinator Area” is defined as: - A) Collection of BAs only - B) Collection of TOPs, BAs, and LSEs « C) Only the TOPs in a region + D) The Balancing Authority's footprint Correct Answer: B Rationale: RC area includes all functional entities under its reliability purview (TOP, BA, GOP, LSE, etc.). 21. The TOP is required to perform a contingency analysis at least every: « A) 5 minutes - B) 15 minutes « C) 30 minutes - D) 60 minutes 11 Correct Answer: B Rationale: TOP-004-4 requires supervisory control and data acquisition (SCADA) update every 6 seconds. 24. Which of the following is not a TOP function? - A) Real-time monitoring of transformer load tap changers - B) Economic dispatch of generation « C) Directing switching operations + D) Coordinating with neighboring TOP for voltage support Correct Answer: B Rationale: Economic dispatch is a BA function. TOP focuses on transmission reliability. 25. If the TOP receives conflicting directions from the RC and its own management: « A) Follow management - B) Follow RC + C) Terminate both and follow operating plan + D) Notify NERC 13 Correct Answer: B Rationale: RC reliability instructions supersede commercial/management wishes per NERC. 26. The TOP must maintain a log of all switching orders for at least: - A) 30 days - B) 90 days « C) 6 months « D) 12 months Correct Answer: B (or 90 days) — per COM-003-4. Rationale: Operating logs for switching and reliability actions retained per regional requirements. 27. An SOL that includes voltage stability is called: « A) Thermal SOL - B) Voltage SOL ¢ C) Stability SOL - D)AIl SOLs include stability 14 Correct Answer: B — Within 30 minutes per TOP-001-4. Rationale: Any SOL violation (even non-IROL) requires resolution within 30 min. 30. The TOP’s switching order approval prior to execution is required for all operations except: « A) Emergency automatic switching « B) Manual capacitor switching « C) Transformer tap changes - D) Opening a line for maintenance Correct Answer: A — Automatic switching (relays, SPS) is immediate. Rationale: But must still log and notify RC. Section 2: Emergency Operations & IROL Violations (31-70) 31. According to NERC, cascade is defined as: - A) Loss of 2000 MW of load - B) Uncontrolled successive loss of system elements - C)A voltage drop of 5% 16 « D) Any SOL violation Correct Answer: B Rationale: Cascading is the uncontrolled loss of system components triggered by an initial disturbance. 32. The first step in the TOP’s emergency action plan when frequency drops below 59.5 Hz: « A) Manual load shedding - B) Notify RC + C) Initiate underfrequency load shed (UFLS) if not activated - D) Increase generation Correct Answer: C — If automatic UFLS fails, manual shedding begins. Rationale: PRC-006 requires UFLS; TOP ensures operation. 33. Underfrequency load shedding relays are typically set to operate at: - A) 60.0 Hz - B) 59.5 Hz, 59.3 Hz, 59.1 Hz - C)57 Hz - D) 55 Hz 17 36. Which of the following is a “Remedial Action Scheme” (RAS)? « A)A thermal relay - B) Automatic load shedding or generation rejection for contingencies - C) Manual switching procedure « D) Load forecasting tool Correct Answer: B Rationale: RAS (or SPS) automatically acts to maintain reliability post-contingency. 37. The TOP must test RAS at least every: « A) 3 months - B) 6 months C) 1 year - D) 2 years Correct Answer: C — PRC-012 requires annual RAS testing. Rationale: To ensure readiness. 38. During a voltage collapse emergency, the TOP may: - A) Increase generator VAR output 19 - B) Switch shunt capacitors + C) Reduce load - D)AIl of the above Correct Answer: D Rationale: All are voltage control methods. 39. If an IROL is exceeded, the TOP must report to RC within 30 minutes and correct within: - A) 30 minutes - B) 15 minutes + C) 60 minutes - D) 45 minutes Correct Answer: A — 30 minutes from identification. Rationale: TOP-001-4. 40. Voltage schedules are typically coordinated between: - A) BA and TOP - B) TOP and neighboring TOP » C)RC and LSE - D) GOP and BA 20 
