Answer / ravi

To keep the neutral stable in case of unbalanced loads, to
nullify the 3rd harmonic currents in the windings by
carrying to them to ground

Answer / sinod kumar

to provide a path for odd harmonics(mainly 3rd &
5th)component of magnetizing current to get sinusoidal flux
and undistorted emf.

Answer / kartikesh

To provide a path to ground to winding harmonic rrent
generated due to unbalanced load ,to nulified the 3rd
hamonic current it should be grounded

Answer / ajit

To stabilise the neutral current .To minimise the earth
fault current.For harmonic supression.

how to select electronic timer(Star-Delta) setting for diff. rating motors

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Piezoelectric materials serve as a source of:- A. Microwaves B. Ultrasonic waves C. Musical waves D. Resonant waves

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During the testing of Electrical Equipment the test cables should not touch the equipments. For that testing engineers use to cotton rope to hang the cable from measuring Equipment to testing equipment terminal. Please explain the technical reason for this practice.

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How do you calculate of power factor, if it is lagging or leading for unit(1).

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in conventional fan regulators how the current varies with speed?

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what is the resistance value of earthing pit and why they are connected?

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ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

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what is power transformer?

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A simple Question from all.... If Voltage drops then its rated value what will be effect on a Residential load? similarly if voltage rises from its rated value then what will be effects on a load? i know if voltage drops the equipment or device draws more current then its rated what are other reasons ? thanks in advance for ur time.......

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why dc did not flows to earth?

2 Answers  

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