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

less reliable in operation

not easy to install

not easy to maintain

more costly

Answer is:

High Rupturing Capacity (HRC) Fuse

Switch Fuse Unit

Circuit Breaker

Electrical Reset Relays

Answer is:

spring press mechanism

trip mechanism

solenoid operated mechanism

air pressure operated mechanism

Answer is:

maximum operating power

minimum operating power

breaking capacity

rupturing capacity

Answer is: