Two kilowatt hour is the energy……….
a) 3,600,000 joule
b) 7,200,000 joule
c) 800,000 joule
d) 10,800,000 joule
A short thin piece of wire which is heated up and melt by flowing of electric current in it, is called…… NTS PST 15/12/2019 (3:00)
a) Circuit
b) Fuse
c) Cell
d) Resister
It automatically switches off the electrical circuit during abnormal condition of the network and much more sensitive to current than fuse.
a) Miniature Circuit Breakers (MCB)
b) Earth leakage Circuit Breaker (ELCB)
c) three pin plugs
d) none of these
The main purpose of……..is to prevent injury to
humans and animals due to electric shock.
a) Miniature Circuit Breakers (MCB)
b) Earth leakage Circuit Breaker (ELCB)
c) three pin plugs
d) none of these
If more resisters are added in a
series circuit resistance will be……………..
a) Increased
b) Decreased
c) Equal
d) Constant
