what type of relays used in transformers?

24 Answers   APTransco, BSNL,

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which cable is preferred PVC OR XLPE for voltage from 220V to 11 KV with proper justification

1 Answers   BARC, Sail,

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what's the difference between 'shaft power demand' and 'BHP' , when we consider electrical load list.

0 Answers   HEC,

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what is the effect of constant power factor to the voltage regulation

1 Answers  

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3 ph motor connected in star delta starter. when we start the motor it run in star but when in is going in delta it trips the main incoming supply. why?

3 Answers   Bajaj Hindusthan,

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I had finished D.E.E.E at 2004,I wish to take C license.I am working pvt company HT supply but my professional certificate was missing.I have diploma & course completed certificate.without professinel may I got c license?.pls guide me.

1 Answers   OEG,

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Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????

0 Answers  

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a solenoid of inductance 250mH and resistance 10ohm is connected to a battery. the time taken for the magnetic energy to reach 1/4th of its maximum value will be?

1 Answers   SSC,

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why impedance relay is used for medium transmission line protection

0 Answers  

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how to produsing geretor power

0 Answers  

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How to set an overload in a motor?

3 Answers  

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We are having a 2000KVA DG set. It trips with Over speed and Engne Hot when the mahine is stopped in full speed. How shall I analyse the block load and reverse power.Is the problem related to power factor. The machine which runs on this DG is having all Synchronous motors with incividual Drives.

1 Answers  

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