MCQ: Which device sends the information to the circuit breaker to interrupt the circuit in case of fault?

1. Switch
2. Relay
3. Circuit breaker itself does this function.
4. Fuse

MCQ: The main function of a fuse is to_____________?

1. protect the line
2. open the circuit
3. protect the appliance
4. prevent excessive currents
5. none of the above

MCQ: With which of the following, a circuit breaker must be equipped for remote operation ?

1. Inverse time trip
2. Time-delay trip
3. Shunt trip
4. None of the above
5. All of the above

MCQ: Thermal circuit breaker has____________?

1. delayed trip action
2. instantaneous trip action
3. both of the above
4. none of the above

MCQ: Magnetic circuit breaker has ___________ trip action

1. delayed
2. instantaneous
3. both of the above
4. none of the above

MCQ: Fault diverters are basically____________?

1. fuses
2. relays
3. fast switches
4. circuit breakers