Answer Posted / ashraf

As the name suggests it is an electronic meter which is
used to measure the KWH,KVAH & KVARH.
it was originaly designed to measure the apparent power,
reactive power & active power. But now a days modern
trivector meter can also measure the power factor,
frequency & other electrical parameters in addition to
these three.

may be instaaled at HV or LV side, input/output side of
power transformer so that the consumption of energy can be
measured.

what is the IPC ? & what the uses ?

1018

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what is the ckt diagram of a tubelight and is it the simplest ckt of electrical engineering and also the component?

1851

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On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

3613

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what is self capacitance of inductor

1845

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what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....

1490

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what is meant by 2 within a star in a voltmeter dial?

1523

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diameter of cable and core is doubled then the value of capacitance is

3703

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why to use freewheeling diode ( diode in revers bias mode) across dc coil

3799

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12.5 tons a/c is their how much kva generator can recommend to the customer.

1495

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how to calculate the settings for shaft ct protn in hydro generators

1506

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How can maintain our H.T. motors used in cement plant. please send me procedure.

4675

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how ups works ? various parts of ups and working principle

1473

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Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

3375

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If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance and battery of accumulator of open circuit emf 110V and 0.5 Ohm resistance are in parallel what is common terminal potential difference?

4173

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i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

1871

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