Answer / shalini.b

Circuit Breaker is one which makes or breaks the circuit.
It has two contacts namely fixed contact & moving contact.
under normal condition the moving contact comes in contact
with fixed contact therby forming the closed contact for
the flow of current.
During abnormal & faulty conditions(when curent exceeds the
rated value) an arc is produced between the fixed & moving
contacts & thereby it forms the open ckt.
Arc is extinguished by the Arc Quenching media like air,
oil, vaccum etc

Answer / sasyasyamal

THE MAIN PRINCIPLE OF CIRCUIT BREAKER IS TO PROTECT THE ELECTRIC CIRCUITS FROM HIGH VOLTAGE AND SHORT CIRCUITS

Answer / prakash

Hai shalini mem absalutly corect the answer....

Answer / niti

circuit breaker main fuction is to prevent equipment from
the fault current. working principal is when the fault
current coming time trip coil act and isolate from main
supply

Answer / bala

if the current flowing through the circuit is more than the
set value it will trip the circuit. that is it compare the
flowing current to set value current.

Unit of Magnetic Flux Density a) Tesla b) weber c) Hendry d) Farad

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