Answer / ashutosh jha

An electric generator or electric motor consists of a rotor spinning in a magnetic field. The magnetic field may be produced by permanent magnets or by field coils. In the case of a machine with field coils, a current must flow in the coils to generate the field, otherwise no power is transferred to or from the rotor.

can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

0 Answers  

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what is the difference between ELCB and RCCB

5 Answers   Concorde, Hyundai,

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what is surge impedence loading

2 Answers   NHPC,

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sir,i am swati. i am goin to gv jspl exam on 21st nov'10. iwant previous year question paper. plz help me out. my emailid is swatisinha.dav@gmail.com

1 Answers  

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why dc series motors never start without some load, and what will happen if starting with out load..

1 Answers  

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explain 100 percent and 95 percent earth faults

1 Answers  

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why there is no current in the rotor body althrough the flux linking with it also get changes. why current only flows in windinds not in rotor

1 Answers   Vedanta,

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Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technical reason please explain it

2 Answers  

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Why the outpet og DG is 415V not 440V?

1 Answers  

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how ups works ? various parts of ups and working principle

0 Answers   Serco,

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what is the major difference between LIBBP & HIBBP.. which one is most preferable..

0 Answers   ABB,

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why we use bare wire in high tension power instead of using insulated wire?

2 Answers  

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