A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3

0 Answers  

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What we change frequency from transformer. yes or no

3 Answers   Intas,

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what is the working principle of DC generator ?

10 Answers   DRDL, HCL,

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i have installed my solar site of 6.7kw and is working perfectly , can somebody tell me that how can i measure my solar irradiation kw/day/sq m ?

3 Answers  

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what is surge voltage and surge current?

2 Answers   MES,

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What is the difference between earth fault protection of motor feeder with CBCT and Without CBCT ?

0 Answers   Enmas, Michelin, Reliance,

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two transformer connected in parallel.tap change are different.if i want to on the buscoupler what happen?

1 Answers   Essar,

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Can you explain about Restricited earth fault protection scheme

0 Answers   NCC,

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how to test generator protection rotor earth fault relay and locked rotor test?

1 Answers  

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ELCBs are installed for protecting humans from AC leakage current.Is there a device which protects humans from DC Leakage current??e.g.leakage from batteries...If not,then why so???

1 Answers  

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What's voltage?

1 Answers   Pakistan Atomic Energy Commission PAEC,

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What is the main function of fuse?

7 Answers  

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