Answer Posted / arun

actully when xmer works there r two losses iron and copper loss due to these losses core and windings r heated and most of the wdg and core are immersed in the xmer so the oil will heatd this heated oil goes up and the cold one goes down this heated oil gives its heat to the walls of the xmer and from the wall it is given to the surrouding atmosphere like this continuous cooling is done by the oil

I have experienced electrical maintenance HT ,but I completed be ECE ....can I apply c license or not ???? Pls help me friend s...

1641

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after how many spot we must chang secondry cable in portable spot welding gun?

1990

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1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

2123

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How time response of the system is divided?

1236

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is it value of power factor is more than unit. whats effects in the source supply

2125

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What is sink and source?

1255

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can any one know is sbi interview based on merit or based on roll number

2053

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a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn

1617

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What are the characteristics of negative feedback?

1119

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what are factors to be consider to design a HT & LT motor?

2372

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for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

2153

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we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

1585

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wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?

2052

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What is a DC series motor?

1294

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Explain the experiment on ward leonard method of a speed control on a dc shunt motor with an suitable circuit diagram.

2653

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