Answer Posted / ppc

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What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

3086

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List of equipments required foe industrial repair lab.

1503

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TRANSFORMERS WITH DC SUPPLY

1518

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The specific heats of the gas at constant pressure and constant volume are respectively 1.0 kJ/kg K and 0.72 kJ/kg K; the value of R for the gas is

694

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What is meant by sag?

651

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Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

3343

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what is ratio of copper wire size and current ?

1367

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What is the type of earth fault protection used in battery? explain.

1854

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What is Delta Connection? What is meant by Forward Delta & Reverse Delta & How Will be the Connection in Power Transformers?

1807

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What are the special cables required for explosion proof wiring?

15632

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tell me about eletrical contractor

1517

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Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

1888

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any application of back emf

1615

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why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

2354

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what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors

1523

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