Q4. Explain the operating principle of the circuit breaker and list the merits and demerits of the following circuit breakers: (10 Mark) (i) Air circuit breaker (ii) Oil circuit breaker (iii) SF6 circuit breaker (iv) Vacuum circuit breaker

When the depletion region widens in the varactor diode, plate separation ____. a. will increase                  b. will decrease         c. become infinite d. become zero

With neat sketch explain the types and operation of oil circuit breaker

Describe and discuss what is a panelboard and describe circuit breaker connections on a typical panelboard.

refer to the circuit below, a. what is the secondary voltage of the circuit (answer in Vrms) b. what is the DC current and rectified DC voltage across the load?  c. what is the maximum current in the circuit? d. what is the direction of the DC current through the load?

Define circuit breaker and write any two types.

Describe the role of circuit breakers in power distribution and protection.

Identify the troubleshooting procedures to determine the serviceability state of the circuits

A 12/2 Type NM copper used for small-appliance branch circuit  ampacity=maximum fuse or circuit breaker size=

Please explain the working of this circuit.