Answer / karan kumar goyal

Transformers: It is an electrical equipment used for
stepping up/down the voltage level for transmission as well
as distribution.

Power Factor: The cosine of angle between voltage and
current is known as power factor. If the current lags
behind the voltage then it is called lagging P.F. If the
current leads the voltage then it is called leading P.F.

Machines: Equipments used for electromechinal conversion
are known as machines.

Answer / geetha

Transformer: is a static device it changes voltage (step
down/step up) with out changing any frequency ....

Answer / siva

three phase and single phase .

What is the gain of 1-s/1=s at 1 rad/sec?

3 Answers   NPCIL,

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DIFFERNCE BETWEEN DCS AND PLC? HOW IT WORKS?

0 Answers   Essar,

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v=r*i this means when voltage increases current also increases at constant resistance.... p=v*i this means when voltage increases current decreases to maintain the power constant which one is true...

3 Answers  

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why permanent magnet generator have higher frequency of 400hz

3 Answers   Jaypee,

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What are interpoles and commutation windings?Why r they used?

1 Answers  

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What is the Difference Between choke & ballast

3 Answers   ABB, ICS Integrated Computer Solutions,

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What is process of anneling transformer core

0 Answers  

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In three pin socket normally three pin in between three pins earthing point is more thickness why?

6 Answers  

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How to select power cable for machine

4 Answers  

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what is DG A,B,C,D check?

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how do we know the LT or HT panel trip by some broblem which indication willshow

2 Answers   TATA,

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dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

0 Answers  

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