Answer / sumit kumar

We know that with emf motor will not run
In case of motor the emf induced is known as back em

A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz

3 Answers  

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what are the ''pitting rings''and how cn they be controlled in a series generator

0 Answers  

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what is the current limit of lighting arrester ?

1 Answers   ABB,

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0 Answers   ABC,

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explain why the armature voltage changes when the field rheostat is varied in self excited DC generator

2 Answers  

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what is the purpose of fuse?

7 Answers  

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0 Answers  

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0 Answers   ABB, HPCL,

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Explain why the Voltage drop will happen in 3 Phase line?

2 Answers  

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2 Answers   DRDO,

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What is battery Limit ?

4 Answers   NDDB,

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