what is meant by 2 within a star in a voltmeter dial?

0 Answers  

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In power generator sets, when they are coverted from 50hz to 60hz, the kva rating after conversion increases. For example, the manufacturer of a perkins 200kva @ 50Hz generator set has mentioned it to become 220kva after converstion to 60hz. What is the relation between the frequency & the KVA rating. Any formula please.

3 Answers  

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In DC while we mention the voltage we are using -48V but in case of AC we mention only 230V not -230V, why we using -48V not 48V

2 Answers  

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In a parallel circuit dc circuit with two resistors, if you know the voltage, amperage, and one resistors ohms, what formula is used to find the second resistors ohms?

6 Answers  

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How can we calculate the rating of a transformer suppose if load is 1000KW?Formula?

3 Answers  

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why overcurrent fault occurs in power system.

1 Answers  

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please send me the L&T Emb. sys. placement papers and entire details of pattren

0 Answers   HMM, L&T,

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we convert 66kv to 33kv then 33kv to 11kv,11kv to 440v.why not we convert directly from 66kv to440v?

7 Answers   HCL, L&T,

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why generally transformer are in star to delta or delta to star used?

8 Answers   ABB,

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What can a fresh(without experience) electrical engineer contribute to NTPC( Or any PSU company) growth?

3 Answers   NTPC,

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Explain the working of any one cutting machine

0 Answers   Mahatma Gandhi University,

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for any load, what happen if we use the cable rating above its normal rating

2 Answers  

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