Answer Posted / vijaybharadwaj202

generally over head transmissions lines are classified into
three types
1.short tr lines :_
in case of short transmisson lines , the
inductance values are less compare to medium and long
transmisson lines .so ,the transmission looses are
caluculated by using =CURRENT SQUARE *A.C RESISTANCE

2. medium tr llines
in case of medium transmisson lines,
THE LOSSES are determined by input-losses

3.long tr lines :-
by using distributed caluculations

At full load wat is the motor p.f And at no load will is the motor p.f?

2116

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

1809

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for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?

1155

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what will be the effect if you were using different brands of outlets?

1912

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dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour

1945

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in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.

2367

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How impulse levels are calculated that for 11kV impulse is 75kvp, for 24kV impulse is 125kvp ?

1999

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determine two methods to find loose connection in operational electrical system?

1675

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Witch do depand of Power factor and theory of power factor?

2090

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what is the difference between megger and earth resister ??

1811

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Define what is power quality meter ?

1250

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The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1887

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we have 15 ampere variyac but we want 30 ampere variyac what we do

1923

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we have consol make 3 phase servo stabilizer for cnc m/c. while installing the earth neutral voltage is 1.7 volts at stbilizer off condition and when stabilizer get on en voltage reaches 4.8 volts (new earthing is done and neutral is helthy condition all phase to neutral volts 440,442,441 v)why this happen.solution for cause.

7085

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Transformer diagram mention each parts ?

2034

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