NERC TESTS COMPILATION BUNDLE

A Balancing Authority notices that Operating Reserve has steadily declined throughout the hour. What is the most likely cause? a) Loss of a large generator in the area b) An inaccurate load forecast c) Loss of a major transmission line d) A malfunction of EMS correct answer: b) An inaccurate ...

Common standard time period for station battery to handle outage of AC power to chargers correct answer: 8-12 hours Time to restore data exchange redundancy when redundancy testing by RC/TOP/BA deemed unsuccessful correct answer: 2 hours Transition period to backup control facility (fully fu...

1. If a 500 kV transmission line with a surge impedance loading of 800 MW is currently loaded at 1400 MW, which of the following events would most likely occur? a. Generator MVAR output would increase b. All system capacitors would trip off-line c. Generator MVAR output would decrease d. All a...

The Reliability Coordinator just informed you of a slow time error correction which will begin at the top of the next hour. Your EMS system will not let you change your scheduled frequency. Your Frequency Bias Setting is -100 MW/.1Hz. What action should you take? A) Increase Net Interchange Sched...

A transmission line is operating with a voltage phase angle different of 30 degrees between the sending Vs and the receiving bus Vr. If the receiving end load is suddenly increased, the voltage phase angle difference will be? correct answer: The phase angle will increase. When load is increased pha...

When current in an AC circuit is doubled, power losses in the circuit will respond in which way? a) half as much b) does not change c) doubles d) four times greater correct answer: d) four times greater What determines the size of insulators used on power lines? a) Current flow on the...

When using a dynamic schedule and the energy profile in an hour is >250 MW and the actual hourly integration deviates from the hourly energy profile by ____ the tag must be modified. A. 100 MW B. 10% C. 50 MW D. 25% correct answer: B. 10% Dry steam plants, flash steam plants, and binary c...

What percentage of load gives a 1 Hz change in an island condition? correct answer: 6-10% (Think 6-10 day island vacation) If ACE is Zero but system Hz is off, what should a system operator do? correct answer: Nothing! ACE bias and interchange schedule will improve frequency If ACE is Zero, ...

If a Balancing Authority does not comply with the Control Performance Standard, the Balancing Authority is not permitted to provide which of the following for any other Balancing Authority entities? correct answer: Regulation of other services related to control performance 1. It is the obligati...

component of an electrical power system that can function as a motor or as a VAR generator is called a: correct answer: Synchronous condenser What are examples of measuring devices in system protection? correct answer: Current transformers, potential transformers, coupling capacitance voltage t...

A misoperation occurred when an overhead ground wire on a 230KV transmission line between two substations broke and fell across A phase of the line. One of the line circuit breakers failed to open causing the breaker failure relay to pick up and as a result tripped the entire substation bus off line...

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 answer: 10 degrees Choose the answer that best describes the operation of a rotor. A) The stationary part of the trans...

According to Nerc Standards, an emergency interchange transaction can be exempt from tagging if it is less than_________________ correct answer: 60 minutes A BA or LSE that requests an EEA 3 must complete and EEA 3 report and submit it to the RC within how many days correct answer: 2 business d...

CIP-002 correct answer: BES Cyber System Categorization CIP-003 correct answer: Security Management Controls CIP-004 correct answer: Personnel and Training CIP-005 correct answer: Electronic Security Perimeter CIP-006 correct answer: Physical Security of BES Cyber Systems CIP-007...