Answer Posted / shankar rao

DOL is Direct on line starter, it is used upto 50 H.P Motors
Star delta starter is Starting time Motor Phases are in Star
and Running time it is convert to Delta scheme.( Because
High H.P Motors are Starting time we are appling Low voltage
by using Star system, and it is increase the Torque.)

i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

2137

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can anyone provide me a amf panel control wiring using ec-2 relay?

2315

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why surge protectetor work explain with the help of circut diagram?

2016

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What is the function of under voltage release ?

1437

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How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?

2302

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what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?

2131

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1979

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what is POTT and PUTT explain?

3363

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Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp

3146

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11 kg trivevter meter has rating of -/5amps. And pt ratio11000/110v and is connected with 11kv ct/pt unit of cr ratio 75/5amps. And pt ratio of 11000/110v while checking accuracy of meter with HT Accuchek meter what value of PT ratio and CT ratio to be filled in Accuchek meter

1933

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I need bhel previous year quetion papers for electrical engineering department.I searched but i could not find out

2094

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How they LT panel busbar size choose

1706

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Define resonant peak?

1156

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application s to shunt coil

1925

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During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

1887

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