What is the formula for calculating transformer Efficiency?

2 Answers  

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what mean by analog ,digital,numerical meters and relays? say the example?

0 Answers   ABB,

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when conductor rotates in varying magnetic field the emf will induced in it and it is sinusoidal in nature ...? Why it is not in square wave and rectangular wave in nature?

4 Answers  

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hi i wonder will the speed of a 50hz AC motor reduce if i supply it with 25hz?

4 Answers   Divis Laboratories,

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he compression ratio for a petrol engine generally lies between

0 Answers   Caterpillar,

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How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?

0 Answers  

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why neutral wire don't shock?

9 Answers  

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What are pre paid energy meters ? How it works ?

1 Answers   Siemens,

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How to work meggar?

0 Answers   Anand I-Power,

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what is harmonics? what are the factors it will depend upon

0 Answers   KSEB,

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how we can use resistance heating for any domestic purpose???

2 Answers  

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what is difference between speed mode and torque mode in motor?? explain in simple words please.

0 Answers   Toyota,

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