BASIC WIRING PRACTICE - Practice Mode

1) Which type of circuit breaker is used above 100 A current rating?

Miniature Circuit Breaker (MCB) Earth Leakage Circuit Breaker (ELCB) Moulded Case Circuit Breaker (MCCB) Residual Current Circuit Breaker (RCCB)

Correct Answer: Moulded Case Circuit Breaker (MCCB)

2) What is the purpose of tin coating on copper fuse wire?

Withstand high temperature Increase the fusing factor Prevent oxidation of copper wire Increase the mechanical strength

Correct Answer: Prevent oxidation of copper wire

3) What is the name of the four insulated conductors group?

Pair Core Quad Layer

Correct Answer: Quad

4) How many two way switches are required in godown wiring circuit to control four lamps

2 3 4 5

Correct Answer: 3

5) Why tree system of wiring most suitable for multistoryed building?

Easy load balancing Constant voltage distribution Offers minimum voltage drop Easy in fault finding with many fuses

Correct Answer: Easy in fault finding with many fuses

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