what is cogging in motors?

1 Answers  

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why dc source used for HV breakers and Relays operation?

2 Answers   Cethar,

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how to checking earth restence with earthtester

1 Answers   NTPC,

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What is a feedback in control system?

0 Answers  

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how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.

0 Answers  

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Define pole pitch?

0 Answers  

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1.What is captive power plant? 2.What is national grid?Give brief idea.

0 Answers  

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what's transient & sub- transient reactance means?

2 Answers  

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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What is mean by CT Saturate? how do we calculate?

5 Answers   ABC,

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is it possible to run the any motor when winding grounded? how?

1 Answers  

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what is saturation in transformer

9 Answers   Essar,

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