What is the full form of MCB?

This question was previously asked in
RRB ALP CBT 2 Electronic Mechanic Previous Paper: Held on 23 Jan 2019 Shift 1
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  1. Miniature circuit Broker 
  2. Maximum Circuit Breaker 
  3. Miniature Circuit Breaker 
  4. Minimum Circuit Breaker 

Answer (Detailed Solution Below)

Option 3 : Miniature Circuit Breaker 
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Detailed Solution

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Miniature Circuit Breaker:

  • Miniature Circuit Breaker is used to protect the circuits from short circuit fault.
  • It is used in the place of Fuse when the amount of electricity is increasing in the wire.
  • The MCB turns off and the result is it breaks the circuits. It prevents from burning of home appliances.
  • MCB can protect the instrument from overloading but not against leakage.
  • In the case of MCB, the faulty zone of an electrical circuit can be easily identified.
  • It is very simple to resume the supply by using MCB.
  • MCB is safer to handle. 

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