Answer / atul

actully in a transmission line since wattage or you can say
power is current x voltage.it has to be constant so if
voltage goes high current has to get low to keep power
constant.

Answer / karthik

V=IxR
this is ohm's law.According to this the current in a line
is directly propotional to the voltage across the line.But
these two are equal only when satisfying a costraint (i.e)
according to the resistance.The value of any two parameters
are maintained a constant and the third is varied.

In a transmission line the impedance is very high,and so to
maintain the voltage at a constant value the current has to
be less.In this case the line impedance is constant,and
voltage has to be maintained constant.So current is varied.

in the Distribution system .which one is Most Economically used by Power Engineer ? a)3 Phase3 wire System or b) 3Phase -4wire System

6 Answers   APTransco,

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why are transformers rated in KVA and not in KW

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What is the deffirant between EARTH, GROUND AND NUTRAL

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How can decide the MVA rating of power transformer for substation like 220/132, 132/66, 66/33kv etc or even higher kv rating of substation???? Send me the strictly technical answer that shows your strong technical aptitude.

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The initial current is very large at the time of starting for almost all DC motors. SO WE USE STARTER FOR A SAFE STARTING but at our homes we don’t see any starters in our coolers, motors.WHY DON’T WE NEED STARTERS FOR THESE APPLIANCES?

1 Answers  

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how to select the no. of brushes in a lap winding?

0 Answers  

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where reactive power is used

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what is difference between AC VVVF drive & Dc VVVF drive explain their working principle?

13 Answers   Apollo, OPS,

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When we use 3 terminal resistor?

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given data are load current & power factor cable core size? plz any one update the calculation formula

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What is servo motor and what are the applications of servo motor?

0 Answers   BARC,

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I HAVE A 50A MCCB AS PER DESIGN LINE WIRE CONNECT UPWORD SIDE AND LOAD IS CONNECTED TO DOWNWARD SIDE TO THE MCCB.IF NOW ANY ONE CHANGE SUPPLY & LOAD(WISEVERSA) WHAT HAPPENS ? DOES MCCB OPERATION OR WORKING FUNCTION NORMAL IF YES THAN WHY THERE ARE MARKED LINE & LOAD ON MCCB.

0 Answers   HCL, TCS,

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