Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

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How to calculate the copper in HT motors if KW, RPM & Voltage is given

0 Answers   Control Dynamics, NTPC,

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Why screen of the screened cable not earthed on both the ends of cable

1 Answers  

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diff b/w elcb and rccb

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In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

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If a Power Transformer Fails and the transformer manufacturer suggest that "Do all electrical test on the transformer?". What are the test to be conducted in this condition?

5 Answers  

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Why should not we run the IM in low voltage, if runs means what will happen?(for example instead of 400V we give 250V supply)

2 Answers  

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Is only insulation the difference between High voltage and Medium voltage cable?

1 Answers  

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why core of transformer in square or rectangular why not in circle or ellipse if this what happens

2 Answers  

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What are electric motors?

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and gate circuit diagram,amplifier circuit diagram

0 Answers   NHPC,

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Why does a TV set have two pin plug whereas the moniter of a computer has three pin plug? Isn't the earthing protection required for the TV set

2 Answers  

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