Answer Posted / tareq harb

relay ca be used to protect against one fault at a time
either overcurrent or undervoltage or underfrequency but
not together, can also be used in switching & control
systems.

Breakers can be used to protect againt too many abnormal
faults in the circuit at one time.

switch gear is a series breakers connected to gether to
form a complete protected bus bar with many inputs outputs.

what is the soft starter principle? how is connection diagram? what is the procedure for checking the connection?

2218

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What is difference and reason b/w -48V BTS system and 24 V BTS system. Plzzzzzzzzz tel me.

2265

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The height to which the liquid in a tank to be maintained for a certain constant velocity?

2041

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for a 400kv t/m line with 10 ampere current will corona occur?

2248

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I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

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what kvrah y we need to take the readind of that

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what is the difference between surge protection capacitor and surge arrestor

2372

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3711

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what is magnetizing current test in power transformer

2815

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WRITEDOWN FEW RELY CODES

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it is possible to rotate the DG engine dc starter with wrong polarity connections? why?

2308

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