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Answer :

Circuit breakers are essentially current carrying contacts called electrodes.

Related questions

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Last Answer : The time of closing the cycle, in modern circuit breakers is 0.003 sec.

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Last Answer : The current zero interruption, in oil and air blast circuit breakers, is achieved by lengthening of the gap, cooling and blast effect.

Last Answer : Circuit breakers usually operate under transient state of short-circuit current.

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Last Answer : Magnetic circuit breakers use Solenoid 

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Description : If the % reactance upto the fault point is 20%, then the short circuit current will be

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Last Answer : The arc temperature in Oil Circuit Breaker may reach up to 5,000° K 

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Last Answer : The number of cycles in which a high speed circuit breaker can complete its operation is 3 to 8

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Last Answer : A circuit breaker is designed to protect an electrical circuit from damage caused by :  (A) Over load (B) Short circuit (C) Over current (D) All of the above

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Last Answer : The Minimum Oil Circuit Breaker (MOCB) is named because of : Reduced requirement of oil 

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Description : ln a minimum oil circuit breaker the oil is used

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Last Answer : The voltage appearing across the contacts after opening of the circuit breaker is called recovery voltage.

Last Answer : Air blast circuit breaker is used for repeated duty.

Last Answer : Magnetic circuit breaker has instantaneous trip action.

Last Answer : Thermal circuit breaker has delayed trip action.

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Last Answer : The arcing contacts in a circuit breaker are made of copper tungsten alloy.

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