Answer Posted / ssnslm

there may be a possibility of sparking b/w slip ring and
brushes that will damage both.

HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.

2101

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When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number

2229

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what is the effect of change in supply frequency on load angle of synchronous motor,all other parameters remaining same?

2414

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In radial network the source is fed from 1 end both ends at central

2168

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what is the difference between earth leakage and earth fault?

2392

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what is mean by dual digital protection in the relay field?

1988

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Why the field rheostat is adjusted such that the voltmeter reads 380V

2350

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In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

2571

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what is method for testing CT

2202

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what is the role of energy meter in distribution system ?

1245

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Mention the disadvantages of low power factor? How can it be improved?

1202

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What is meant by analogous system?

1376

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Star Delta Diagram with full description

2441

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what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

2062

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we are going to install a solar PV site and how can we calculate PV Solar Panel Efficiency, can anybody tell me complete method for its calculation.

2190

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