Switchgear Assembly and Function Quiz

Switchgear Assembly and Function Quiz

Created by
@EndearingCliché

Questions and Answers

What is the main purpose of switchgear?

To control and protect electrical circuits and equipment

Why can't a tumbler switch with an ordinary fuse be used profitably on high voltage systems?

It cannot interrupt large fault current successfully

What problem arises when a fuse blows on high voltage systems?

The risk of serious damage to costly equipment

Why are automatic protective devices or switchgears required for high voltage systems?

<p>To prevent damage to electrical equipment from heavy currents during short circuits</p> Signup and view all the answers

What is the key disadvantage of using a tumbler switch with an ordinary fuse on high voltage systems?

<p>Inability to interrupt large fault current successfully</p> Signup and view all the answers

What is the primary function of a circuit breaker in an automatic protective equipment system?

<p>To open or close an electrical circuit under normal and abnormal conditions</p> Signup and view all the answers

Why might a circuit breaker be preferable to a fuse in certain instances?

<p>Capable of opening and closing circuits without replacement</p> Signup and view all the answers

What happens when heavy current flows through the primary of the current transformer (CT)?

<p>The secondary e.m.f. induced in the CT increases</p> Signup and view all the answers

How is an arc extinguished in a circuit breaker during opening?

<p>By using oil, air blast, vacuum, or SF6 gas</p> Signup and view all the answers

What is the role of the relay in an automatic protective equipment system?

<p>To detect faults in the electrical circuit</p> Signup and view all the answers

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