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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Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com

0 Answers  

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Zone of protection and tripping scheme of arc protection relay.

0 Answers   KSEB, L&T, Siemens,

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what are transmission line parameters and transmission line constants?

1 Answers  

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How do we calculate the out Put voltage of generator, after excitation being given?

2 Answers  

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can any one explain me the where is the use of plc and scada

4 Answers  

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1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

0 Answers  

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What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

0 Answers  

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What accessories required to give the motor with given circuits and do you know the ratings of those accessories?

4 Answers   Hyundai, TCS,

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Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

0 Answers  

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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

0 Answers  

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What is the differance between Digital Energy meter & Static energy meter? why the KWH diferance between both meters.

3 Answers   Raychem RPG,

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