Answer Posted / vijay kumar surla

Yes a rotating machine can give DC output without commutator.Here the commutator is a mechanical rectifier.Instead of using commutator we can use electrical rectifiers (like full wave diode rectifiers) to convert AC to DC.

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

3249

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Give two basic speed control scheme of dc shunt motor?

1049

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ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

1963

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State any two nuclear power stations in India, with their generating capacity.

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2585

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Define end float in a motor?

5870

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WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

1936

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1789

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Explain the difference between verilog task and verilog function?

1254

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how to calculate the Neutral transformer impedance?

2367

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what is the path of thunderlightening? once both a buffalo and a person were standing 5m apart but lightening hit and killed buffalo not person?

2814

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for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

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What is different between Difnit time and instatous over current relay

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