Answer / roop kumar

To identify the phases in switch yard / line and to synchronize the system

hi.. i am krishna. i've complide my diploma engg.in electrical.i applied many places for jobs.but i am always fear from written test.ican't get success in it. i think my basic engg. is weak..show me some idea please..!

5 Answers  

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WHAT IS LOAD CELL

0 Answers   AP, TATA,

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0 Answers  

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Wtat is mean by GHOAST VOLTAGE?

3 Answers  

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What is systematic error?

0 Answers  

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Transformer TTR test procedure

2 Answers   Descon,

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1 Answers   L&T, NMDC,

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2 Answers  

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difference between earthing and grounding?

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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.

0 Answers  

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1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

0 Answers  

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what are the major difference between 3phase 3wire and 3phase 4wire trivector meter?

2 Answers   L&T, NTPC,

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