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This official NERC TOP (Transmission Operator) System Operations exam guide for 2026 includes actual graded questions and correct answers. It covers key topics such as generator torque angles, rotor operation, power system stability, capacitive vs. inductive loads, transmission outage management, CIP-001 sabotage reporting, telecommunications standards (COM-001/COM-002), operating personnel authority (PER-001/PER-003/PER-004/PER-005), contingency analysis tools (PTDF, OTDF, GSF), transmission loading relief (TLR), and real-time reliability coordination procedures. Essential for NERC System Operator certification candidates.
Typology: Exams
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At what torque angle of operation does power typically begin to flow from the generator to the system? A) 90 degrees B) 60 degrees C) 30 degrees D) 10 degrees - Answer >>>10 degrees Choose the Answer that best describes the operation of a rotor.
A) The stationary part of the transmission system. B) A type of superconductor. C) The stationary element of a generator that has its windings connected to the system. D) The excited (energized) field winding that rotates inside the stator to induce current into the stator windings. - Answer >>>The excited (energized) field winding that rotates inside the stator to induce current into the stator windings. In a system that is more capacitive than inductive, the current sine wave will ______ the voltage sine wave with tends to ___________ voltage. A) lag; raise B) lead; raise
A) When the power angle increases to 90 degrees or more. B) When a disturbance causes momentary power angle excursions greater than 90 degrees. C) When heavy power transfers occur in the system, such as when there is a loss in generation. D) All of the above - Answer >>>All of the above Which of the following is a method that Reliability Coordinators and Balancing Authorities may use to manage transmission outages? A) Coordinate and adhere to voltage schedules to minimize reactive power flow. B) Optimize the use of Load Tap Changer transformers, capacitors, and reactors.
C) Verify voltage control equipment are on automatic to supply the required voltage support. D) All of the above - Answer >>>All of the above When a large generator on an Interconnection trips off line, the ____________ of the Interconnection ____________. A) frequency; drops B) transformer temperature; drops C) AVRs; drops D) voltage; increases - Answer >>>frequency; drops
B) torque angle; voltage C) System Operating Limits; Interconnection Operating Limits D) voltage; frequency - Answer >>>voltage; frequency Which of the following is one of the criteria used to determine the System Operating Limit? A) Setting appropriate voltage levels to withstand various contingencies. B) Identifying equipment minimum loading capabilities. C) Recognizing operator limitations. D) Identifying how transformers respond to severe fluctuations in frequency. - Answer >>>Setting appropriate voltage levels to withstand various contingencies.
NERC Standard CIP-001 is applicable to which of the following entities? A) Generator Operators and Load Serving Entities B) Balancing Authorities and Transmission Operators C) All of the choices provided D) Reliability Coordinators - Answer >>>All of the choices provided Sabotage events are often difficult to identify, therefore, entities are required to have __________ available for operating personnel. A) procedures B) contact information C) FBI or RMCP
NERC requires each Reliability Coordinator, Balancing Authority, Transmission Operator, Generator Operator and Load Serving Entity to establish communications contacts, as applicable with local Federal Bureau of Investigation (FBI) or Royal Canadian Mounted Police (RCMP) officials and develop _____________ as appropriate to their circumstances. A) media relations B) reporting procedures C) governmental operating guidelines D) step by step procedures to stop the sabatoge - Answer >>>reporting procedures In the event of sabotage on the transmission or generation system, it is highly likely that the procedure developed for CIP-001 will include the Disturbance
Reporting procedure your organization has developed in response to NERC Standard category ________. A) EOP B) TOP C) CIP D) IRO - Answer >>>EOP Disturbance events that are suspected to be caused by sabotage, shall be reported to _____________. A) the appropriate systems B) governmental agencies
D) A pole-top distribution transformer has lost most of its oil through a bullet hole. - Answer >>>Guy wires are cut on transmission towers on two separate lines at about the same time. The one word that is used to distinguish the difference between vandalism and sabotage is ______________. A) premeditation B) results C) intent D) consequences - Answer >>>intent On a mild spring day, a transmission line trips. The line then trips again when energized. Which of the following is LEAST likely to be the problem?
A) Overload B) Vandalism C) Sabotage D) Equipment failure - Answer >>>Overload A Transmission Operator receives a report from a line crew of damage to insulator strings on a key 345 kV transmission line. There is currently an outage. The crew foreman believes the damage was caused by gunshots. Which of the following actions is required of the Transmission Operator by NERC? A) None. NERC does not have requirements regarding vandalism. B) Report the incident to the FBI or RCMP.
Each Reliability Coordinator, Transmission Operator, and Balancing Authority shall have ________ to enable continued operation of the system during loss of telecommunications facilities. A) a data recorder B) written operating instructions and procedures C) an automatic control selector D) an understanding - Answer >>>written operating instructions and procedures What language has been established for all communications between and among operating personnel responsible for real-time generation control and operation of the interconnected Bulk Electric System? A) Spanish
B) English C) English/Spanish D) English/French - Answer >>>English Violations of the NERCNet Security Policy include any act that ____________. A) involves unauthorized use of data B) uses data for illicit purposes C) discloses trade secrets D) All of the above - Answer >>>All of the above Which entities are responsible for ensuring that personnel with access to NERCNet understand their obligations to protect the NERCNet assets?
C) Inform the Reliability Coordinator and neighboring Balancing Authorities D) Purchase non-firm energy as contingency reserves - Answer >>>Inform the Reliability Coordinator and neighboring Balancing Authorities During a lightning storm, a fault on a transmission line results in the transmission relay operations to lock-out and the transmission line cannot be returned to service. After running a contingency analysis, the Transmission Operator realizes that if another transmission line trips, there could be cascading outages into a neighboring system. Which of the following actions is appropriate of the Transmission Operator? A) Reduce system loading without notifying anyone
B) Notify its Reliability Coordinator, and all other potentially affected Balancing Authorities and Transmission Operators through predetermined communication paths. C) Prepare a disturbance report and forward it to the Reliability Coordinator D) Reduce transmission voltages by 5% to reduce customer demand - Answer >>>Notify its Reliability Coordinator, and all other potentially affected Balancing Authorities and Transmission Operators through predetermined communication paths. A Transmission Operator recognizes that the heavily loaded transmission system has insufficient reactive resources to maintain nominal voltage. It is apparent that a 5% voltage reduction on the distribution system will be necessary to avoid a potential voltage collapse on the transmission system during peak hours. Which of the following actions should a System Operator take in these circumstances?
