what is the difference b/w conductor and semicoductor

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what is the working difference b/w softstarter and Variable frequency drive ?

6 Answers   Parle,

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what is transformer

7 Answers   Hofincons,

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What is drain current of static relay?

1 Answers  

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What will be the excat cable specification in Sq MM...please find the details below.... Induction Motor HP:55 Amps:70(starting Amps),45(Running Amps). Volts:415

1 Answers  

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I am working in 600MW power plant currently in erection phase. I came along this term and want to know its meaning in simple language, consider me naive!?? All motors shall be of energy efficient type EFF-2 as per IS:12615/ equivalent IEC / International Standard.

1 Answers   Punj Lloyd Ltd,

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I want to know which cable would be best to carry 125A current to a distance of 50m. Voltage is 3phase. Kindly share the formula with answer.

1 Answers   Medway Educational Consultant,

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what the principle of sincroscope?how it works?when it needed?

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what is reactive power?, why its measured in VA ? is it transient behavior of system?

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Why we use d.c. meger in a.c. induction motor?

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what is meant by excitation which supply is used whether ac r dc in the lab applications

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A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is

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