Answer Posted / k.prakashchandra

My above answer appears to be wrong.Contactors are for
closing circuit and are to be opened manually.Circuit
breaker has a tripping (opening) mechanism and may have
closing mechanism also.

What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

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What are the specifications for getting approval of Substation?

1871

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How much depth n width required for laying of 1X70 Sqmm Cable in Desert???

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what is negative d.c. voltage, why this voltage is used in base transciever station.

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A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

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1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?

2082

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Where burned of electricity,when,who, & why.

1929

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Hi,iam a diploma in electrical engineering.rtd from indian air force in apr 2007.prsently working in reliance next link as a network maintenance engineer since 2007,can i get a job in motherson sumi.

2314

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what is the reason the main breaker is trip during the motor is running? (some time the breaker is not trip)

1733

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i need of the bhel question papers along with answers and also give some website names for the downloading question (electrical and electronics engg question)please help me....

1861

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Efficient electrical earthing in hard rock area

1506

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If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

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how to calculate single phase motor efficiency ?

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sir am giving jspl exam on 19th oct . i belong to eee, so plz send previous question papers ..........to dis id abhilash203@gmail.com

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how to read idmt curva

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