Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

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What is main purpose of chock coil and starter in florescent tube ?

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A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

2 Answers   DRDO,

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What is power factor? How to improve Power factor? draw a circuit diagram showing the connection of power factor improvement equipment to the electrical instillation.

1 Answers  

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How to Convert horsepower to kva? what is the three phase formula? explain me if u can Example..i have 50Hp Moter how can i convert in kva tell me formula three phases Rehan Smileavail@msn.com

4 Answers   Bajaj,

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what is the use of the circle diagram

2 Answers  

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Meaning of ingrace protection for motor.for ex IPXY

0 Answers   BARC,

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What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

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Why neutral wire is heating in symmetric single phase distribution of three phase power supply?

2 Answers  

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How does a digital electronic meter work??????

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why electron produce magnetic field when it is in motion?

0 Answers   Power Grid,

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what are carbondioxide and dcp used in fire extinguishers

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