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Electrician Set-1
Circuit Breakers
23

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

23) Earth Leakage Circuit Breaker (ELCB) works on the principle of

over load current

short circuit current

residual current

neutral current

Answer is:

residual current

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

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

24) The ELCB expansion form is

Earth Leakage Circuit Breaker

Earth Leakage Control Breaker

Earth Leakage Current Breaker

Earth Leakage Component Breaker

Answer is:

Earth Leakage Circuit Breaker

25) An ELCB must always be connected in the circuit

before energy meter

after energy meter

at the entry of supply to load after energy meter

tail end of the installation

Answer is:

at the entry of supply to load after energy meter

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

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

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

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