for high freq ac,why we first convert AC to DC and then DC to high freq.AC

0 Answers  

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For high voltage and low current Circuit Breaker preferred is vacuum circuit breaker.why?

1 Answers  

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what is Aircraft earthing and what does it do?

6 Answers  

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how to prepare PPM schudule

3 Answers   TATA,

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What do you mean by ratio correction factor of instrument transformer?

0 Answers  

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IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

0 Answers  

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Why the arms of delta in a delta-wye power transmission system are kept constant??

0 Answers  

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why dc is used in control circuit for mv & hv switchgear instead of ac

0 Answers  

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why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?

4 Answers   Alstom, L&T,

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What are methods to avoid the inrush current at the time of starting of power transformer ?

8 Answers   Wipro,

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difference between circuit breaker and switchgear?

6 Answers   L&T,

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what is the difference between phase and neutral?

3 Answers   IAF, Indian Airlines,

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