Answer / k.prakashchandra

Earth pits ?

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

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1.what type of wave is produced from i.online ups ii.offline ups iii.inverter.why don't we use inverter instant of offline ups for computer,what's the reason?

2 Answers  

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why should a transformer be never connected to dc supply

5 Answers  

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I want the details about BHEL company examination.Can anyone able to help me please.

0 Answers  

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if the supply voltage increased by N times, the x-section of conductor will be.........

2 Answers   APGenco, Electrical Tech, Ericsson, IES, Thirumalai Chemicals,

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Whether power factor should be high or low? Why?

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Three phase power is measured with two wattmeeter for balance three phase load.the reading of one wattmeter is zero.we can conclude that the power factor of balance load is?

1 Answers  

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If DC supply is given to a transformer it may a) Work b)Not Work c)Give lower voltage than the rated voltage on secondary side. d)burn the winding

12 Answers   wbsedcl,

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why we used servo motor insted of inducation motor?

1 Answers  

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Explain why inductance of the iron cored coil changes with current?

2 Answers  

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we have 3 phase 4 wire supply 230/415 V.AC and our distribution is single phase or we have all single phase 220 v,ac operated appliances. and noted the current with help of clamp meter Red to N = 20 Amps. Yellow to N = 45Amps and Blue to N = 30 Amps ( total is 95 Amps ) what will be neutral current on the main .

1 Answers   ABC,

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How over load relay works.

1 Answers  

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