For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?

0 Answers  

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In zero voltage we can pass supply to our body means we cant get shock its true ? how we can do it ?

4 Answers  

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How can we calculate ac current from the given DC current when AC voltage is given?

0 Answers  

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If the rated speed of a d.c. Shunt motor is1440 r.p.m, which method of speed control would you suggested to obtain a speed of 1500 r.p.m?

0 Answers  

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what is safety of ups

1 Answers   JLL,

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What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

0 Answers  

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How can we get d.c series motor characteristics by using a.c induction motor?

1 Answers   IIT,

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why the substation require din electrical system?

1 Answers  

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why we oltc on hv side of tranformer only

10 Answers  

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Does voltage and current can be seperated?

2 Answers  

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what is skin effect? why is it absentin dc system

22 Answers  

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sir , what happen if we decrease ( approx 3 inch ) the lenth of shaft in 110KW Induction , three phase motor. actually a 110KW motor is couppled with star couplling to 120TR compressor. When we doing maintenance in compressor it is required to skid the motor backword and resulting dis- alightnment . so we want to change the tyre coupling in place of existing coupling. so it is required to cut off the rotor aprox 3 inch form driving side.

2 Answers  

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