Answer Posted / amit das

IT IS A ADDITIONAL WINDING THAT USED FOR LOW VOLTAGE IN
SWITCH YEARD .

what could be the RMS value and average value of a 4 phase sine wave?

1884

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1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.

2076

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What are the commonly used schemes for the bus zone protection?

1064

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armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?

1911

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How to calculate the current of Highpressure Mercury Vapour Lamp?what is the basis?whether we have to consider power factor or not?

2154

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What is called limb of a transformer?

1041

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Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

1106

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We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

1645

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We have given to 3phase supply to ups system & how can coming netural

2152

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what is RFID? thire application;

2042

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How DC earth leakage currents can be reduced ?

1927

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what is diff btw electric,magnetic & eletromagnetic field

2130

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how to prepare the technical test

2091

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from which subjects most of the technical que will b asked for hpcl(electrical).pls help me

2001

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What the main causes of transient interruptions on Over-Head Distribution Lines?

2148

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