Answer / sudhakar g

Hpot is the test we can do if any cable damage happend or any leakage of current....Every cables must be tested before they sent to consumer and the test certificates also provided when ever we buy that product....Before terminated to any transformer or panels or any equipment...We have to do the megger test because if there is any cable damage while we are laying the cable....If you go for high rise buildings it is recommended use Rising main, you will tap the supply from the Rising main and main advantage is voltage drop is not occur compare to cable laying.......

What are linear and non-linear systems?

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As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

0 Answers   cpgn,

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What is the difference between relays and contactor construction wise?

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differentiate between remote backup relay and local backup relay?

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22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 Answers  

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A parallel flow heat exchanger will perform better than a counter flow heat exchanger. State if the statement is true or false.

0 Answers   Blue Star,

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What are the causes of electrical faults?

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why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.

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why the transformer secondary voltage is more than the load end voltage like t/f 11KV/433V for 415V(terminal voltage)

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in shunt clippers why a resistor is used in sereis with the input

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Classify drilling machines.

0 Answers   Ashok Leyland,

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Is there such a frequency as 440v 50Hz?

1 Answers  

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