Answer / shibil

Types of Relays:

1.overcurrent relay
2.Earthfault relay
3.Motor protection Relay
4.Generator protection Relay
5.Bus Bar protection relay
6.Distance relay

What is auto reclose system in Circuit breakers

1 Answers  

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what is pole slip ?

4 Answers   NTPC,

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TCS IS IT COMPANY THEN WHY DO THEY NEED ELECTRICAL &ELECTRONICS ENGINEERS?

0 Answers  

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sir , what happen if we decrease ( approx 3 inch ) the lenth of shaft in 110KW Induction , three phase motor. actually a 110KW motor is couppled with star couplling to 120TR compressor. When we doing maintenance in compressor it is required to skid the motor backword and resulting dis- alightnment . so we want to change the tyre coupling in place of existing coupling. so it is required to cut off the rotor aprox 3 inch form driving side.

2 Answers  

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why the the electrical machine coil are damage ? How to prevent it?

2 Answers  

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How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?

4 Answers  

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How can we calculate the current if we have load in KVA and if the load in KW then what formula will be use for calculating the current. please give both the formula for calculating the current.

3 Answers  

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Why a single-phase induction motor not an inherently self-starting machine?

11 Answers   ETC, Hindustan Shipyard,

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How we find the size of cable if we know the current

2 Answers   Gemscab,

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what type of cables exsisting in the world and how many types

9 Answers   Alstom,

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We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.

4 Answers  

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Explain marx circuit.

0 Answers  

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