Answer / j.kesavan

vaccum circuit breaker ,vaccum is arc qunching media, to
arrest the arc in breaker closing time.

Answer / shabharish

This CB is normally used for high current carrying
feeders ,Here vaccum is the media to quench arc during
making or breaking of contacts

Answer / sunil kaushik

as the name indicated that arc is extingished in arc during making or breaking of contact. the vaccume is about of (10)-8 torr.

Answer / er. r.n.soni

Vaccum means "no media". As such arc could be generated
while opening and closing of electical circuit

Then what do you call a transformer that is installed on the ground?"

1 Answers  

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I need tnpsc AE Electrical question papers

2 Answers   TNPSC Tamil Nadu Public Service Commission,

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What is the difference between electrical earthing and electrical grounding?

0 Answers  

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How to convert KVA rating into HP rating?

6 Answers   AITM,

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Which device is used for the source of emission of electrons in a crt?

0 Answers  

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if a.c supply is given to the motor,, what happen?

0 Answers   Bhel, L&T, MSEB,

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please give me solution to rectify the emi(electromagnetic interference)

0 Answers   Powergear,

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Is corona effect occurs in Induction motor. pl. justify the answer.

4 Answers   KPS,

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prefer any good electrical engineering book.....it should be useful in the practical fied?

1 Answers  

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what is rated speed?

4 Answers   Actavis,

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have u any web site who can give all electrical sum's to solve counting easy like how to convert 1kw=?Kva.

1 Answers   Marriott,

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How is the speed of a DC shunt motor related to the armature current?

0 Answers   GE,

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