what is difference between start imitation and start interlock for 3 phase motor protection ?

2 Answers   OPS,

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can d.c.transformer exist? if yes then what its max. rating?

6 Answers  

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Unit of Magnetic Flux Density a) Tesla b) weber c) Hendry d) Farad

3 Answers   Ecil,

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what is mathematical relation between ac to dc current how will convert Iac=50amp to Idc

7 Answers  

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Why field rheostat is kept in minimum position while armature rheostat at maximum position?

0 Answers  

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Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp

0 Answers  

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how to calculate of which rating transformer should be selected? take any example

2 Answers  

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What is size 00, 01, 1 etc., in HRC fuse types?

0 Answers   Jaypee,

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what is ripple ??? what is harmonics ?

3 Answers   ABB,

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can a 50 Hz transformer work satisfactorily if placed under 60 Hz,what are the prices and losses that will arise

5 Answers  

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why the capacitor bank unit is kvar

3 Answers   Infosys, L&T,

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Why is the electric shock from the DC supply is more dangerous than the shock from AC supply.

8 Answers   IBM,

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