in india why 50 hz and 220 volt taken as standard rating for equipments whereas in US 100hz and 110v is consided as standard rating.is this method save power.

5 Answers   Wipro,

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In a incandescent bulb, if the glass is punctured, and then power is supplied, the tungsten filament blows up with a flash.Why?

2 Answers  

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how we can save the power ? suppose the electricity board gives 11 kw , but the machine require only 8 kw means how we can save the exese energy

2 Answers  

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suppose we using 3 phase motor of 440 v means what range of C.T. is require for measuring current ?

9 Answers  

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For a Potential Transformer(PT), the primary neutral terminal must be grounded before energization. Why....? What will be heppend if we energize the PT without grounded the primary neutral point? Why..........?

2 Answers  

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What effect of supplying stationary generator (800kVA) with 415V AC from 1500kVA transformer?

2 Answers  

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What is the real function of reverse power relay in generator panel while syncronising?

0 Answers   Triveni,

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what is the voltage of insulation megger that should be used for measuring the resitance of 66kv equipments.

3 Answers   DEWA,

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what is the difference between Miniature circuit breaker & motor control circuit breaker ?

4 Answers  

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what is your majour contributions in your present job

0 Answers   ESL,

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what is difference between KW,KVA,KVAR? also give me the formula for all the three...

3 Answers  

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how to calculate full load current of transformer & induction moter ?

2 Answers  

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