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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break down of electricity is more in summer or in winter ? give reason

4 Answers  

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what is the principle of servo motor

2 Answers  

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why our indian system choose the 230 volt for single phase&415 for 3-phase voltage,in forign side 110 volt is used what is the difference

4 Answers   Jindal,

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How to calcualte 1unit of current consumption?

3 Answers   Bhushan Power Steel, ITC Infotech,

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what is formula of illumation calculation

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Frequency of rotor emf in induction motor is around A same as stator frequency B 50% C 5 % or below D 30%

1 Answers  

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What range of speed can you get with the field control method of speed control of d.c. Shunt motor?

0 Answers  

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We are having a 2000KVA DG set. It trips with Over speed and Engne Hot when the mahine is stopped in full speed. How shall I analyse the block load and reverse power.Is the problem related to power factor. The machine which runs on this DG is having all Synchronous motors with incividual Drives.

1 Answers  

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A FIELD MAGNET IS EXITED BY AC/DC?

4 Answers  

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which is better VCB or ACB and why?

7 Answers  

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Why Closing coli supervision is not required for Circuit breaker.

1 Answers   JSW,

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