Question

Fillups
1 ELCB stands for.........

2).......... and......... are types of earthing

3) pn junction is also called as .............

4) For star connection Vph= ................

Answer 1

1)Earth-leakage circuit breaker

2) tn , it

3)depletion region.

Answer 2

1) Earth leakage circuit breaker.

2) Lead,Joint Earthing.

3) Forward Bais.

4) Vph = 0

Hope this helps ☺️☺️