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 the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.

3 Answers   ABB, HAL,

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what is difference between MCB & MCCB

1 Answers  

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Why increase in current leads to increase in conductor temperature?

0 Answers  

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transmission line losses

1 Answers   SVS Constructions,

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How can step up and step down process in power transformer

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

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why the genearation of electricity always in form of sine wave only ??? why not cosine wave ???

1 Answers  

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WHAT IS FAULT CAPACITY OF HT MOTOR TERMINAL BLOCK? ANY BODY HAVE ANSWER PLZ....POST IT.

0 Answers   Birla,

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How do you select the pickup value of the relay?

0 Answers  

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Why? We r used 50sq. mm. And above size cable in 3.5 core and below size are used in 4core

2 Answers  

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why rating of generator is kva but motor is kw ?

4 Answers  

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why v/f ratio to maintain constant in speed control of induction motor?

3 Answers  

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What is the allowalable frequency variation in India and in US? Why there is the difference?

3 Answers  

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