Answer Posted / azam

Physically You need 3 phase energy meter and 3 ct‘s to measure the units on hourly～monthly basis
By formula calculation is simple
power factor=kw/kva
KW=√3VIcosØ

what is meant by impulse voltage?

1950

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Write a note on materials used as a fuse element.

2070

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in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

1862

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i want to put single phase load on scott connected transformer,eventhough how to balance the transformer.

1779

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what is x'mer ,isolation x'mer & yltra-isolation x'mer?????

2375

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Working of microwave oven?

2192

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1071

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What is the actual calculation for transformer short circuit test?.

2405

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WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???

2320

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please forward me the type of questions which would rise while me attending to 33KV Electrical License to my mail ID:vadrevu_raghava@yahoo.co.in

1968

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What is limitedly stable system?

1060

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How we calculate DC inducation moter Amp? Sir pls give me formula......

1787

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A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

1053

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Why AC current leads voltage in capacitor and how?

2094

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1)Explain why the cradle guard is used on railway crossing in overhead line construction?

4986

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