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Electrician
Electrician Set-1
Circuit Breakers
26

Circuit Breakers MCQ - Electrician (Set-1) with Answers

26) ELCBs are specially used to disconnect the supply under

short circuit condition

ground fault condition

open circuit condition

over load condition

Answer is:

ground fault condition

Circuit Breakers MCQ - Electrician (Set-1) with Answers

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Related Circuit Breakers MCQ - Electrician (Set-1) with Answers

27) The expansion form of RCCB is

Residual Current Circuit Breaker

Residual Circuit Current Breaker

Residual Current Control Breaker

Residual Control Circuit Breaker

Answer is:

Residual Current Circuit Breaker

28) Expansion of MCCB is

Moulded Case Circuit Breaker

Main Case Circuit Breaker

Main Control Circuit Breaker

Main Current Circuit Breaker

Answer is:

Moulded Case Circuit Breaker

29) What is the purpose of Earth leakage circuit breaker in building wiring installation ?

It protects the appliances from excess current

It prevents the waste of electrical energy consumption

It establishes the supply voltage

It protects the energy meter from short circuit

Answer is:

It prevents the waste of electrical energy consumption

30) The main disadvantage of ELCB is

less reliable in operation

not easy to install

not easy to maintain

more costly

Answer is:

more costly

Circuit Breakers MCQ - Electrician (Set-1) with Answers

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