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Electrical Power System Abnormalities Quiz

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Electrical Power System Abnormalities Quiz

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Questions and Answers

What are the major abnormalities that can occur in electrical equipment?

Overloading in generators, field failure, unbalance loading, overvoltage in transformers, overheating in induction motor, single phasing, stalling, and undervoltage.

What is the role of CT (Current Transformer) and PT (Potential Transformer) in a protection system?

CTs are used to obtain reduced current signals for measurement, control, and protection. PTs are used to obtain reduced voltage signals for measurement, control, and protection.

What are the basic elements of a protective system in an electrical power system?

Sensing element, CT/PT selector, summation transformer, measuring element, comparator/relay, amplifier, and circuit breaker.

What is the purpose of using CTs in electrical power systems?

<p>CTs are used to isolate relays and instrument circuits from the high voltage primary circuit, and to allow the use of standardized current ratings for relays and meters.</p> Signup and view all the answers