What are the different lines and what are the different
types of losses occur on them?
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Answer / manish meena
1)short transmission line: when the length of an overhead
tranmission line is about 50 km and line voltage is <20kv
2) medium transmission line: when the length of an overhead
transmission line is about 50-150 km and line voltage is
>20kv<100kv.
3) long transmission line: when the length of an overhead
transmission line is about more than(>150km) and line
voltage is >100kv.
Main losses are corona losses,losses due to inductance and
capacitance(but these are negligible)
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / percy
short 0-80 Km
med 80-240 Km
long above 240 KM
losses I*I*r
losses occuring in capacitance b/w two or three conductors
| Is This Answer Correct ? | 3 Yes | 3 No |
I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.
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1 Answers GPSC Gujarat Public Service Commission,
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