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

Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

1113

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what is the best transformer oil breakdown voltage?

1175

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explain with diagram how to protect transformers and substations from over current with help of CT's?

2006

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th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

2020

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what is the transiant condition in alternator? and how it can be prevanted?

2171

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In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?

3367

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I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

1455

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WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

2466

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Can we transmit digital signal to long distance ?

1997

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if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please

2131

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can some one clearly explain why -48 volt DC use in telecom site????

1743

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how to calculate power consumption in slip ring motor at different step

2294

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WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT

2502

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11000volt DG set carnt kaise banvay

1721

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I AM GOING TO ATTEND APTRANSCO ON 26TH OCT 08.PLEASE SEND ME ANY MATERIAL OR TYPE OF QUESTIONS OR EXP QUESTIONS.

1992

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