Answer / r.k. gupta

We are using IGBT & SCR in UPS system because these are high frequency switching with high current devices. which are used in UPS for inverting the supply from DC to Ac during battery backup of UPS. 

Define peak overshoot.

0 Answers  

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What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?

2 Answers   Bhel, Dawlance, IBM,

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DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

0 Answers  

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basic differance between electrical and electronic.

1 Answers   Jindal,

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1 Answers   Exide,

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What is the criteria in selecting Air circuit breaker(ACB) & Moulded case circuit breaker(MCCB) for a particular range?

3 Answers   DLF,

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HOW TO CALCULATE HV CABLE SIZING?

0 Answers   KNPC, L&T,

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what is saturation kit?which use above 15 kw motors panel side.

0 Answers   Power Grid,

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mccb service sittings be done?

0 Answers  

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Transmission line design. Say, I have a 1MVA generator and 2 transformers that will have the same load. What would be the proper rating of the trasformers? Is it safe to say, that I will simply divide the total rating of the generator?

1 Answers  

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What are the advantages of star-delta starter with induction motor?

7 Answers   Merchant Navy, Naval Academy, Samundra Institute of Maritime Studies, YMCA,

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how the transformer stables out zone faults? Because we use non directional O/C relays .Is there any special considerations are taking into account to overtake this?

1 Answers  

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