Answer Posted / sanjeev

in dol starter starting torque is high.which is on light load.it is connectrd direct to line and used below 5hp.
in star-delta starter starting torque is 60% and it reduced to 1/3and its then connected to delta.this starter is used above 5hp.

What is mean by spike arrester(Voltage Operated)

1600

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Write a note on materials used as a fuse element.

1678

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4701

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how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?

2815

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731

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4199

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1809

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WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB

1459

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Explain what is electric traction? Explain few advantages of electric traction system?

597

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Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar

1476

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616

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1874

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Give accurate definitions for these electric terms: Inductor Inductance Inductive Induction Reactance Reactive Esam Baraka ٢١ ساعة

912

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