Answer / sarmadahmed

Because at no load, the only significant current component is Excitation current which is 90 degree out of phase with the supply voltage. Since pf = cos(@) and @ is around 90 here, power factor is very low.

What are the different methodes for calculating the short circuit Current?

0 Answers   Equate,

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what is difference b/w earth and ground?

7 Answers   TATA, TCS,

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How will you utilise electrical power? You can start from the generating station.

0 Answers  

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which type of harmonics minimum produce in 12 pulse rectiformer transformer? a)3rd b)5th c)7th d)11th

4 Answers   Power Grid, Powerica,

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which transmission is cheaper ac or dc?

10 Answers  

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can we use inductor in case of d.c.,if yes then what will happen in circuit

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what is sevice settings for mccb?How can be it setted?

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3 Answers   NTPC,

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For polarity test on a 11/3.3kV 2.5MVA delta-star Unit Auxiliary transformer,415V 3-phase supply was applied at the HV. Connection between Aa was made with a 2.5mm cable. As soon as power was switched on the cable caught fire and burnt. This test was then abandoned. It is noteworthy to say that a similar cable was also used in a similar transformer for the same. The cable did not burn and test was successfully completed with good result. What is wrong? Please, help me out.

3 Answers  

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what is the difference between 230v and 115v?

1 Answers   Bhushan Power Steel,

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working of a diesel generator.

34 Answers   ABC, AC, Cognizant, CTS, Directorate of Lighthouses and Lightships, KSL, Quippo, Shree Renuka Sugars, SRF, Svam Power, Tech Mahindra,

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