Active power= VI COS FI But incase of leading power factor ( more than unity), may we use other formula ? because the cos fi (value of cos thita) should not be grater than one.

2 Answers  

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why do we connect voltmeter in parallel,why not in series,and why do we connect ammeter in series why not in paprallel...

4 Answers  

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How can we measure the frequency of a rotor running in full load condition? Explain the method of measuring.

2 Answers   Wipro,

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If we increase frequency in transmission line in lieu of voltage what will happen?

1 Answers  

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What should be value of Circuit breaker operating time and tripping time?

3 Answers  

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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How we can calc. the Backup time of a battery Bank???

6 Answers   Emerson,

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what is kondo syatem in eletrical traction

0 Answers   APCPDCL,

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Do u know any one? how to find out in motor rated amps? formula?

0 Answers   Banking, ET,

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What exactly is meant by harmonics and harmonic current?? and what is skewing with regard to this??

2 Answers  

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What is the efficiency during maximum power transfer?

0 Answers  

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what is the difference between fc-tcr and tsc in facts

3 Answers   SCET Shadan College Of Engineering and Technology,

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