Answer Posted / pritish

at the initial stage the voltage induced by the choke is nearly about 2000v due to the inductive property of choke and this high voltage is required to discharge the gasses from the filament of the tubelight. after the discharge id initiated it requires normal supply voltage to maintain the path for the gasses inside the tube.

what is Fan Control Cubicle

2420

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What is the tests required for a 132 kV, 400 kV , 765 kV for a Circuit Breaker and Power Transformer before commissioning ?

1514

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How to calculate the sag on transmission Lines.

2922

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when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

1934

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Can u tell me design of switch yard

2119

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Define resonant frequency?

1143

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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

2171

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What are the conditions for sustained oscillator or what is backhouse criterion?

1088

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How two nos. 130 kw D.C motor get synchronise using D.C drive.

2051

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what is the total power generation in india?

2253

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oltc of a transformer, how it works? and what are the equipment consist of describe briefly?

1977

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how the speed of the gets motor regulated. does it draw the same current on the all speed level.

1936

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When distance between two pulleys is not fixed, the tension of belt is adjusted by a) driver shaft b) driven shaft c) adjustment screw d) belt

2974

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Why the cores of large transformers build up of circular cross section?

2226

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Why collecting electrode of ESP to be earthed

2074

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