Why the colour of insulator is always is chocolate in colour?

1 Answers   MRF,

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What is the acceptance value of leakage current in HI POT test

2 Answers   CPCL,

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

0 Answers  

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What core magnetic balance test of transformer? How to do this test in a three phase Star star (star-LV, star-HV) transformer? How to measure and where to measure?

1 Answers   Alstom,

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what is the relevance of knee point voltage in protection and metering grade CT ? and basically what is knee point voltage ?

2 Answers  

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why neutral of 6.6 kv star connected sq. cage induction motor does not get earthed, though for earth fault protection it is must.

7 Answers  

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High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?

0 Answers   NTPC,

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how to meas-our losses for L.T & H.T

0 Answers  

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why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?

0 Answers  

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what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

0 Answers  

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what will happen if the bus PT fuses are accidently removed from the circuit in 6.6kV feeder?

1 Answers  

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what will happen to give a dc supply in transformers?

3 Answers  

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