what is the minimum winding resistance of 30hp compressor, to run or to switch on

0 Answers  

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how we select the fuse and OLR rating for 3 phase induction motor from 1HP TO 100 HP?

2 Answers   Thermax,

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What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

0 Answers   Eskom,

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In power transformer tappings are provided on A high voltage side B low voltage side C In middle of both the windings D both high and low voltage side

2 Answers   NNN,

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how to calculate the battery AH

0 Answers   Turbo,

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can i able to get bhel previous exam question paper?

0 Answers   Bhel,

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Why dc voltage used to excite alternator field in stead of ac?

4 Answers  

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How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

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how many earthing required for ups, what should be the earth voltages

9 Answers   Juniper Networks,

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Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above

0 Answers  

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if d gen is 50kw,load is 60 kw,hw d gen ll supply d remaining power?

3 Answers   NHPC,

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Can you explain the phase displacement between primary and secondary of power transformer of any vector group(for ex)?

1 Answers  

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