Thermal circuit breaker has?

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asked Mar 19, 2018 by anonymous

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Magnetic circuit breaker has ______ trip action.

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asked May 8, 2018 by anonymous

A circuit breaker is designed to protect an electrical circuit from damage caused by :

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asked Apr 30, 2018 by anonymous

For selecting a circuit breaker, ______ should be determined.

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asked Apr 26, 2018 by anonymous

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asked Mar 20, 2018 by anonymous

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asked Mar 20, 2018 by anonymous

The arc voltage produced in A.C. circuit breaker is always?

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asked Mar 20, 2018 by anonymous

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

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asked Oct 13, 2019 by anonymous

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asked Apr 30, 2018 by anonymous

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asked Apr 29, 2018 by anonymous

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asked Aug 15, 2019 by anonymous

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asked May 8, 2018 by anonymous

The overall efficiency of Thermal Power Plant is equal to _______________ .

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asked May 3, 2018 by anonymous

In a thermal power plant, ash is collected in

Last answer: In a thermal power plant, ash is collected in hoppers or bunkers

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asked Apr 30, 2018 by anonymous

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asked Mar 10, 2018 by anonymous

What is thermal runaway of a transistor?

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asked May 8, 2018 by anonymous

Which of the following circuit breakers has high reliability & minimum maintenance?

Which of the following circuit breakers has high reliability & minimum maintenance? (A) Bulk oil type CB (B) Air blast CB (C) Vacuum CB (D) Sulphur hexafluoride CB

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asked May 8, 2018 by anonymous

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

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asked May 8, 2018 by anonymous

The following is/are the characteristics of SF6 circuit breakers:

The following is/are the characteristics of SF6 circuit breakers: (A) It does not need an auxiliary breaking chamber (B) Short break time of 2 to 2.5 cycles (C) All of the above (D) None of the above

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A fuse in a motor circuit provides protection against?

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Last answer: Air blast circuit breakers for 400 kV power system are designed to operate in 50 millisecond.

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The short circuit in any winding of the transformer is the result of?

Last answer: The short circuit in any winding of the transformer is the result of impulse voltage.

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asked Mar 20, 2018 by anonymous

The time of closing the cycle, in modern circuit breakers is?

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

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asked Mar 19, 2018 by anonymous

The current zero interruption, in oil and air blast circuit breakers, is achieved by?

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

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asked Mar 19, 2018 by anonymous

Circuit breakers are essentially?

Last answer: Circuit breakers are essentially current carrying contacts called electrodes.

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asked Mar 19, 2018 by anonymous

Circuit breakers usually operate under?

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

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asked Mar 19, 2018 by anonymous

Arc in a circuit behaves as?

Last answer: Arc in a circuit behaves as a resistance decreasing with voltage rise across the arc.

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asked Mar 19, 2018 by anonymous

In which fault the maximum short circuit current occurs?

Last answer: In three phase bolted fault the maximum short circuit occurs.

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anonymous · Answer 1 · 2018-03-19T22:31:58+0000

answered Mar 19, 2018 by anonymous

Thermal circuit breaker has delayed trip action.

Thermal circuit breaker has?

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