Answer Posted / amit kumar chaudhary

The application of substation is to stepping up or down the
voltages as per requirements , There r so many substation
classification has been decided by IEC and IS ,Transmission
substation, distribution substation etc.

The application of Switchyards is to deliver the generated
power from power plant at desired voltage level to the
nearest grid or transmission line.

how many synchronous motor are there in any power plant

1993

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What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

1642

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What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

1708

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how are reversing the direction of dc motor

1648

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what is mean by dry frequency

2454

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After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.

1980

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Define the term Capacitance and Inductance?

1101

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Explain what is electric traction?

1124

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plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

2078

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Dear all, how we select the cable size according  to current with or without including different correction factor , is there any direct method for sizing of cable... 

2155

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Why is the starting current high in dc motor?

1121

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What is the technical difference between On delay timer and a Star delta timer?

1611

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How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

2135

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what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

1892

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What is the necessary and sufficient condition for stability.

1125

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