what is power factor?

7 Answers   CA,

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why frequency should be constant?

2 Answers  

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140 is load amps for a equipments and what ratio of CT requied for installimg ammeter to amps montering purpose?

1 Answers  

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Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

0 Answers   Bhel,

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what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?

0 Answers  

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Is it a better option to procure screw type air compressor rather than reciprocating air compressor?If so, what is the reason?How should we select an air compressor(100 CFM)? Please mention the important parameters of air compressor.

0 Answers  

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what is the principle of switch gear? where its function ?

9 Answers  

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what's the activities of reactor in Buchholz relay?

1 Answers   Yahoo,

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Distinguish between neutral earthing and equipment earthing?

7 Answers  

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1.what is use of isolation transformer. 2.Differance between KWH,KVAH,KVARH,KVA. 3.Main use of the CT and PT.

1 Answers  

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if reactive power become zero in transmission system then what effect on system.???

3 Answers   Sedemac,

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Derive the inductance of a coil in terms of its physical factors.

1 Answers  

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