Answer / sunil solanki

circuit breaker operating time & tripping time should be in
ms.also tripping time should be less than operating time.

Answer / barkha thakur

Circuit breaker operating time & tripping time should be
few cycles of the supply voltage

Answer / electrix

Cicuit Breaker Opening / Closing time are always in milli
secs. usually in 11 kv breakers it is around 60 - 80 ms for
closing and 40 - 60 ms for opening.

In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

1 Answers   Caterpillar,

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why AC cannot to be stored and DC cannot be transmitted?

11 Answers   IBM,

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which Machine u will prefer to use at place where Flammable gases are coming out & why ??

6 Answers   NTPC,

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why voltage rating not mention at HPSV or HPMV lamps?

2 Answers   OPS,

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Less cost of delta connection over star connection a. No fourth neautral wire

1 Answers  

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why dhyedration test required for transformer oil once in a year

1 Answers  

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if we have 320KVA Genset kindly advice how much load we can put it.

0 Answers  

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Why is water motor not taking the pressure? what is the problem?

0 Answers  

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can we run all LT motors at 360 volts which are normally rated 415+/-10% voltage rating

2 Answers   Meinhardt,

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can we use inductor for passing or blocking of AC or DC?

3 Answers   Moser Baer, NTPC,

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Please elaborate th´evenin’s theorem?

0 Answers  

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xlpe cable 4 core nuetral wire is small why ?

3 Answers  

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