what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

1 Answers   ABB,

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why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

4 Answers   DLF,

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What will happen if power transformer designed for 50 Hz is connected to 500 Hz of the same voltage , and vice versa ?

1 Answers  

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how one can design armature winding bothh front and back connection

1 Answers  

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should dc supply will give the transformer to build up the voltage level

1 Answers  

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What is differance between alternator and generator?

4 Answers   IOCL,

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What is the practical way to calculate the cable size for known ampere load?

0 Answers  

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when the direction of a 3phase induction motor is reversed , is there any losses increases?

5 Answers   IOCL,

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how to calculate the cable size for LT and HT power cables with detail explanation?

2 Answers   Asset Developments, Bhel,

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what is meant by impedance & transient protection?

0 Answers  

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WHY HVDC?

3 Answers  

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how we can find out the speed of fan without using any measuring instrument

2 Answers  

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