what is the difference between diode and zener diode?

21 Answers  

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whu the transformer noise during running condition?

1 Answers   NTPC,

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In winter we seem lightly an electric shock when we touch to doors(sometime)

13 Answers   Infosys, REL,

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which is better 50 HZ supply or 60 HZ supply?

6 Answers  

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how we can save electrical energy in industries,please give some inputs

3 Answers  

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IN A MAGNETIC MATERIAL HYSTERYSIS LOSS CAN'T BE REDUCED TO ZERO. HY?

3 Answers  

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Is it possible to use AC supply insted of DC supply in trip coil operation? if not, why?

5 Answers   HAL,

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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can we use existing 6300V alternator for generating 6600V by increasing excitation,what are advantages & disadvantages to alternator & motors of 6600V.

1 Answers   GMR,

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what is earth pit , how we can measured it, what earth rods reference

0 Answers   ups,

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I have lowered a submersible pump having 100 LPM discharge & 130 Mts. Head, 15 HP rating on borewell. After lowering 108 Meters, It is taking 39 amps & blowing the fuse. Can someone put light what is the cause behind it ?

1 Answers  

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How to test Alternator stability test for REF relay

0 Answers   Amprotec,

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