Answer Posted / gulshan goyal

it depends on the machine.If it is a motor and if we
increase excutation power will shift from lagging to
leading.as we increse the excitation angle will first
decrease as in lagging side than angle will increase in
leading side and hence the power factor will initially may
be .8 lagging than .9L,.95L,1 than .95 leading ,.9Ld,.8Ld

please explain how to do 'pole drop test' on generator?

2919

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What is a difference between indoor transformer and outdoor transformer of same rating

5834

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Which is the largest hydropower station in the world?

1157

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Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?

2899

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sir my exam is on 19/6/2013 under electrical branch pls send me sample aptitude questions as well as sample technical questions for jindal steel and power company

2183

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What is industrial plc

1829

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Y phase plates are used in transmission line??? what is there need???

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i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.

1931

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If I bring a basic electric meter from the States and hook it up in Costa Rica in a development that has only one transformer for the 50 homes, will it still be accurate regarding the usage of kilowatt hours?

1937

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standard earthing rating for power line..

2139

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What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?

2663

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What are the parts in a inverter?

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how does grading rings & spacers in transmission line works? Working Principle?

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sir please send me previous year questions of jspl of electrical section through which i could prepare myself fpr the test.

1922

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why high speed tripping relay is used in protection circuit why not normal relay

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