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THESE ARE QUESTION FROM THE SUBJECT POWER SYSTEM FUNDAMENTALS AND THE TOPIC IS TRANSMISSION LINES 1)  A...

THESE ARE QUESTION FROM THE SUBJECT POWER SYSTEM FUNDAMENTALS AND THE TOPIC IS TRANSMISSION LINES

1)  A 200 km, 3-phase transmission line has its conductors placed at the corners of an equilateral triangle of 2·5 m side. The radius of each conductor is 1 cm. Calculate

: (i) line to neutral capacitance of the line,

(ii) charging current per phase if the line is maintained at 66 kV, 50 Hz.

ANS IS [(i) 2·02 µF (ii) 24·2 A]

2)   A single phase transmission line has two parallel conductors 1·5 metres apart, the diameter of each conductor being 0·5 cm. Calculate line to neutral capacitance for a line 80 km long.

ANS IS [3·48 µF]

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