Answer Posted / prasanna

1.Engine
2.ALternator

how calculated Transformer losses.

2038

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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.

1104

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why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points

2074

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what is Anti-pumping?

1940

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what is the difference between unarmoured & Flexible cable? How to identified?

6210

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Dear sir, I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.

1753

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Control wiring of a dol starter for forward and backward

1581

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When MICC cables used ?

2084

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What facility we get after CT secondary earthing and how?

2250

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Enlist four components of electrive drives.

1843

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On Which Pressure PRV is operated.

1726

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what is conductor constant of raccun conductor

2236

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what is earthing.how we make it,describe briefly.

2621

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Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

2031

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1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

8204

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