Answer / viraj

1.higher load
2.could be some jamming problem in shaft
3.it could be single phasing
4.motor winding i2r loss
5.it may be insulation damage

Answer / jagmohan singh

1. Loose connection.
2.cooling fan not available.
3. Bearing life over.
4.one phase missing.

Answer / k.prakashchandra

Cooling vs heat generated

Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

0 Answers   WCC,

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why insulators are colured in brown only?

3 Answers   Transco,

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If the Brsh of DC motor is shifted by 90 deg, then MNA will shift by --degree.

5 Answers   GATE,

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which protection function should measure RMS value of current&DFT value of current?

0 Answers  

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1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

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On what principle electric motor works?

0 Answers  

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if any leas acid battery is having low or high sp.gravity taen what will be effect of battery and why

4 Answers   CFCL,

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What is the use device of the grid.

1 Answers   Premier,

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Define working of prim mover governer in alternator?

1 Answers  

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in transmission line 11kv is step up or step down? why?

5 Answers  

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On what basis no of earth pits are to be decided either for transformers or for equipment?

8 Answers   BEL, Reliance,

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Is 2000kva stabilizer suitable for 1h.p split air conditional

2 Answers  

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