Answer Posted / gautam lasgotra

For 1.5 ton ac you should use at least a 32 ampere dp mcb.

WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??

2281

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I am interested to know what does 15 KVA DG set actually means? If I dont know the DG rating, is it possible to identify KW by simply knowing the diesel consumption?

2250

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If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

2127

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What is the most important precaution in any experiment with d.c. Shunt motor?

1312

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Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

1972

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where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

2012

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what types of electrical & mechanical test conducted in switchyard?

2318

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What is difference between mcb and mccb.

1201

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Where voltage are high and current to be interrupted is low the breaker preferred is:

2350

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During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

1987

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In siemens PLC, why do we want to move the data ?

2375

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What are the site acceptance tests for power cables, DG Sets, LT panels & 30kVA UPS ?

2442

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what is effect of length of air gap on performance of dc motor and generator?

1936

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Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

2018

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volts=230 c=10mf a=??

2098

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