what s a servo motor? how to control the servo motor? and its application, purpose of using?

2 Answers   Arabian Pipes,

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why plc need seprate earthing?

2 Answers   ABB, Whirlpool,

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0 Answers  

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what is diffrence b/w -48vdc and +48vdc ?

1 Answers  

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What happens with squirrel induction machines if the ends of rotor conductors are kept open? Explain

5 Answers  

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In Energy meter How many rotation Equal to one unit.

3 Answers  

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what is corona effect?

39 Answers   ABB, Genco, Wipro,

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what is the difference between surge arrestor and lightning arrestor ?

6 Answers  

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what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

0 Answers   NTPC,

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I know the Capacitor value- 12.5KVAR, voltage 440V gas filled, then what is the formula for calculate the microfarad value for this 12.5KVAR capacitor

2 Answers  

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What is meant by power factor correction?

5 Answers   Aspire,

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Why High voltage are generate noise ?

0 Answers  

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