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.

Can We Apply DC POWER To Transformer???? And Why????

4 Answers  

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase), before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

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what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?

0 Answers  

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What is full form of ELECTRICAL?

3 Answers   Changwoon, DP World, Electrical, GSS, HCL, ITI, L&T, Maruti Suzuki, MCC, SMR, Somany Ceramics, TRDP, Wipro,

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Why dont we get shock while testing for voltage with a line tester? How the bulb inside the tester glows while testing with tester coz we are totaly isolated from earth or we are not giving close path for the current to flow?

3 Answers  

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What is the formula for calculating transformer Efficiency?

2 Answers  

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why ac wave is sinusoidal not square or triangular wave what will be reason

1 Answers   ACPL,

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WHAT IS THE FULL FORM OF ONAN ( TYPE OF COLLING IN TRANSFORMER)

7 Answers  

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why ie corona losses in tranmission line

1 Answers  

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Natural frequency of a system gives... 1) nature of transient 2) overshoot 3) oscillations 4) speed of response

1 Answers   CCP,

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why two fuses are used in battery charging room?one in positive line and the other in negative line?do any DC system require two fuses?

1 Answers   HPCL,

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Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

2 Answers  

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