Answer Posted / prasoon

In a HV Sub station, 220 Volt system is not earthed to
avoid mal operation of DC controlled electrical elemnets in
case of a earth fault.

50 Volt system is earthed (-ve). This is done as 50 volt
system is used for electronic circuits where -ve voltage is
required to opearate npn transistors.

Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.

1678

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we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?

1931

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What is the approximate value of stacking factor?

1167

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What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?

1000

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1. How many types of mangers? 2.How many types of capacitors? 3.pls tell me normally types alternator problems?

2350

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hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks

2166

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limitation of conductor height on ground when we consider EMC

2058

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what is load vs Torque curve & why it is used?

2082

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A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?

2173

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In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

1082

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what irequirment need to be followed when working on live equipment

1799

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if voltage bt phase & nutral is 38v in a panel board . whats the root cause.

2318

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Explain the purpose of inductor in an electric circuit?

1135

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State nyquist stability criterion.

1184

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Percentage losses in power generation?

2998

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