Answer / sree

efficiency=out put*100/input.
so, in case of motor out put is energy consumption but in generator energy generated. so efficiency is high in case of generator.

Answer / amal

entropy of electrical energy is less than mechanical energy.
so it is easy to convert mech>ele without much loss rather
than the reverse.

why we define potections of Tourbo generator in Class A & B.

1 Answers   GIL,

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what are the specifications we must look at to select a relay for any capacity motor?

0 Answers  

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I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

0 Answers  

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Why is the earth fault relay connected to the Yellow Phase?

4 Answers  

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why is the power generator connected as star earthed or star earthed through reactance and what its features ?

0 Answers  

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What is the meaning of transformer 16 / 20 mva. 

1 Answers  

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IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.

0 Answers  

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how to check IR values in alternator winding?

3 Answers   Birla, Naftogaz,

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say a transformer is designed for 33/11kv step down with ratio 0.33 for load 1 mva. if am giving 11kv as a input that same transformer what will happen to its o/p voltage. and whether it can be operated for 500kva

4 Answers  

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can anybody find out the result. I am lil bit confused about my equation.

1 Answers   Student,

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What is primary and backup protection?

0 Answers  

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why neutral busbar size is half of the phase busbar size in control panels

1 Answers   IBS,

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