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NERC TOP SYSTEM OPERATIONS 2026 EXAM
COMPLETE (74) CURRENT TESTING QUESTIONS
AND CORRECT DETAILED ANSWERS |TOP RATED
A+.
NERC
Prepare effectively with this NERC TOP System Operations Exam, designed to assess essential knowledge of transmission operations and reliability standards. It focuses on grid monitoring, system reliability, contingency analysis, and compliance with NERC operational standards. The exam strengthens decision-making and situational awareness in power system operations. Suitable for system operators and energy industry certification candidates. An objective of the NERCNet Security Policy is to ensure that NERCnet information assets ____________ on a cost-effective basis and to a level that allows NERC to fulfill its mission. A) are adequately protected B) meet ISO 9000 standards C) are easy to use
D) are up-to-date ✓ ✓ CORRECT ANSWERS
ONLY are adequately protected
A Transmission Operator recognizes that actual line loadings are such that a single Contingency could threaten the reliability of the Interconnection. What action is required of the Transmission Operator? A) Notify the adjacent Transmission Operator and monitor until the loading is reduced B) Notify the Reliability Coordinator and wait for instructions from the Reliability Coordinator C) Notify its Reliability Coordinator, and other potentially affected Balancing Authorities and Transmission Operators D) Notify all the Transmission Operators and Balancing Authorities via an Interconnection-wide telecommunications
system. ✓ ✓ CORRECT ANSWERS ONLY
Notify its Reliability Coordinator, and other potentially affected Balancing Authorities and Transmission Operators If a Balancing Authority is unable to purchase capacity or energy to meet its demand and reserve requirements on a day- ahead or hour-by-hour basis, which entity (or entities) is it expected to notify?
Inductive loads ✓ ✓ CORRECT ANSWERS
ONLY voltage sine wave will lead the current sine wave
which will lower voltage
Real Power ✓ ✓ CORRECT ANSWERS
ONLY MW's. flows from a higher voltage angle to a lower
voltage angle, also said to flow downhill on a decreasing power angle
CIP-001 Sabatoge Reporting ✓ ✓ CORRECT
ANSWERS ONLY Purpose-sabotage shall be
reported to the appropriate systems, governmental agencies, and regulatory bodies. Applies to: RC, BA, TOP, and LSE's
COM-001 Telecommunications ✓ ✓ CORRECT
ANSWERS ONLY Purpose- for each RC, TOP, BA,
to have adequate and reliable telecommunication facilities internally and with others to exchange information necessary to maintain Reliability
Applies to: TOP, BA, RC, Nerc net user organization COM-002 Communications and Coordination ✓ ✓
CORRECT ANSWERS ONLY Purpose: to
ensure BA's, TOP's, and GOP's have adequate communications and that these communication capabilities are staffed and available for addressing real time emergency conditions Applies to: RC, BA, TOP, GOP PER-001 Operating Personnel Responsibility and Authority ✓ ✓
CORRECT ANSWERS ONLY Purpose:
Transmission Operator and Balancing Authority operating personnel must have the responsibility and authority to implement real-time actions to ensure the stable and reliable operation of the Bulk Electric System. Applies to : TOP's and BA's PER-003 Operating Personnel Credentials ✓ ✓
CORRECT ANSWERS ONLY Purpose: To
ensure that System Operators performing the reliability-related
Power Transfer Distribution Factors (PTDF) ✓ ✓
CORRECT ANSWERS ONLY represent the
impact of an interchange transaction on a given path. It is the measure of how electric loading on a transmission system responds to a change in electric power transfer from one area to another. Expressed as a %. MW impact=Interchange transaction MW x PTDF Outage Transfer Distribution Factor (OTDF) ✓ ✓
CORRECT ANSWERS ONLY the purpose
is to measure the responsiveness or change in electrical loadings on transmission system facilities due to a change in electric power transfer from one area to another when one ore more system facilities are removed from service. Used to calculate the flow of MW's on a facility after a pre-defined contingency. Expressed as a %
Generation Shift Factors (GSF) ✓ ✓ CORRECT
ANSWERS ONLY describe a generators impact on
a flowgate or path. Express in a % of change in the MW flow on a specified path due to a change in gereation output.
GSF= [(change in path flow)/(change in generation)] x 100 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 ✓ ✓ CORRECT ANSWERS
ONLY 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. ✓ ✓
CORRECT ANSWERS ONLY The excited
Which of the following conditions may cause transient instability in the power system? 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 ✓ ✓ CORRECT ANSWERS
ONLY 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 ✓ ✓ CORRECT ANSWERS
ONLY 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 ✓ ✓ CORRECT ANSWERS
ONLY frequency; drops
A(n) ___________ is the value that satisfies the most limiting of the prescribed operating criteria for a specified system configuration to ensure operation within acceptable reliability criteria. A) System Operating Limit B) Circuit Overload C) System Overload Limit
D) Identifying how transformers respond to severe fluctuations
in frequency. ✓ ✓ CORRECT ANSWERS
ONLY 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 ✓ ✓ CORRECT
ANSWERS ONLY 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
D) displays ✓ ✓ CORRECT ANSWERS
ONLY procedures
NERC requires each Reliability Coordinator, Balancing Authority, Transmission Operator, Generator Operator, and Load Serving Entity shall have procedures for the recognition of and for making _______________ aware of sabotage events on its facilities and multi-site sabotage affecting larger portions of the Interconnection. A) Regional Reliability Organizations B) DOE C) NERC
D) their operating personnel ✓ ✓ CORRECT
ANSWERS ONLY their operating personnel
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) the appropriate systems B) governmental agencies C) regulatory bodies D) appropriate systems, governmental agencies and regulatory
bodies ✓ ✓ CORRECT ANSWERS ONLY
appropriate systems, governmental agencies and regulatory bodies Of the following events, which is most LIKELY to be reported as sabotage? A) Guy wires are cut on transmission towers on two separate lines at about the same time. B) Several insulator strings on a span of transmission lines have been damaged by gunshots. C) On a transmission line with "H-frame" construction, one wood pole in a newly plowed field is cut nearly all the way through at the ground-line. D) A pole-top distribution transformer has lost most of its oil
through a bullet hole. ✓ ✓ CORRECT
ANSWERS ONLY 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 ✓ ✓ CORRECT ANSWERS
ONLY 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 ✓ ✓ CORRECT ANSWERS
ONLY Overload
D) redundant ✓ ✓ CORRECT ANSWERS
ONLY redundant
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 ✓ ✓ CORRECT ANSWERS
ONLY 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 ✓ ✓ CORRECT ANSWERS
ONLY 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 ✓ ✓ CORRECT ANSWERS
ONLY All of the above
Which entities are responsible for ensuring that personnel with access to NERCNet understand their obligations to protect the NERCNet assets? A) Reliability Coordinator B) Regional Reliability Council C) NERCNet User Organizations
