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

for high freq ac,why we first convert AC to DC and then DC to high freq.AC

0 Answers  

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without name plate detail of blower how we can find out the HP & Rpm ? the input voltage is 230v single phase

1 Answers  

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What is the meaning of floating point earthing in battery backed systems ?

0 Answers  

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what is meant by 2 within a star in a voltmeter dial?

0 Answers  

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Which formation is better in transmission lines - horizontal or triangular and why ?

2 Answers  

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An electric bulb giving light but at the time of lighting which one it takes? voltage or current

6 Answers  

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What is the working principle of VFD

3 Answers   HCL,

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0 Answers   Visa,

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can we run 3 phase induction motor under 2 phase supply

12 Answers  

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Can we use LT(150 sq. mm) cable in place of HT (120 sq.mm.) cable.?

1 Answers  

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What are linear and non-linear systems?

0 Answers  

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What is the function of restraining coil in differential relay? as well as restraining current?

8 Answers   Medical, Siemens,

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