1KVA transformer of different frequencies of 50hz,100hz,500hz&1000hz. which one of these transformer has big size? Give reason

16 Answers   Ecil, Engineers India, MahaDiscom,

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what is meant by excitation which supply is used whether ac r dc in the lab applications

1 Answers  

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What is open loop and control loop systems?

0 Answers  

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What is floating earthing?

2 Answers   Equate,

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Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you

2 Answers  

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Difference between HRG and NGR. Are they both the same thing

0 Answers  

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Why do you get a typical sound when the transformer is put into operation?

4 Answers   IIT,

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what is the differance between MC61C and MC61A relay of L &T make.

1 Answers   BARC,

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how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???

0 Answers  

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before synchronizing an alternator,power factor is leading ,why?

0 Answers   CUMI,

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how many parameters can integrate with fire alarm basically ?

0 Answers   Schneider,

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In any Industry, Which voltage level either 3.3kV or 6.6KV to be chosen? Then I would like to know ,Is there any cost consideration or Rating of motor?

5 Answers  

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