Answer Posted / infodoss

If You apply a dc supply in a tranformer the transformer
can not opearate.The transformer winding produced more heat
and finnay burn due to insulation failure.

how to differentiate a mpcb,mcb with a contactor? Explain their working operation

2134

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What is kvar?

1292

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is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

1876

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what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?

2294

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After synchronization with grid what is the demand value QKVAR and how we will maintain that?

2214

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why the carbon brushes are broken in srim while the motor runningtime

1641

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if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system.

1936

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IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?

1839

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hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1933

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What happens when ac supply is given as excitation voltage instead of dc supply

3701

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List few applications of d.c series motor?

1090

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what is apparent poewr, reactive power, & active power?

2247

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how to define tell me about self

1956

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what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?

2058

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1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

8008

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