Rajasthan Polytechnic Third Year Paper 2016 – Power System II

Rajasthan Polytechnic Third Year Paper 2016 – Power System II

ACSR Stands for
(a) Aluminium Copper Steel Reinforced Conductor
(b) Steel Reinforced Aluminium Conductor
(c) Aluminium Reinforced Steel Conductor
(d) None of the above

Shackle Insulators are generally used as
(a) In Horizontal position, for low voltage line
(b) In verticle position, for low voltage line
(c) In both Horizontal and vertical position, for high voltage line
(d) In both horizontal and vertical position, for low voltage line

String efficiency depends on
(a) Length of cross arm
(b) Grading of capacitance
(c) Static shielding
(d) All of the above

For PCC concrete pole line, the approximate value of span is
(a) 50 – 80 mtr
(b) 10 – 40 mtr
(c) 100 – 150 mtr
(d) 140 – 300 mtr

Transposition of conductors in Transmission system is required, because; it
(a) reduce the line loss
(b) reduce skin effect
(c) balance line voltage drop
(d) reduce corona

For an HV transmission line, following insulators are used
(a) Pin type
(b) Suspension type
(c) Both (a) & (b)
(d) None of the above

String efficiency is 100%. It means
(a) One of the insulator discs is shorted
(b) Zero potential across each disc.
(c) Equal potential across each insulator disc
(d) None of the above

For 11 kV transmission line, the value of inductance is of following order
(a) 01 mH/km/phase
(b) 0.1 H/km/phase
(c) 4 mH/km/phase
(d) 0.1 mH/km/phase

The total length for a medium transmission line is
(a) 40 – 30 km
(b) 80 -160 km
(c) 160 – 240 km
(d) 300 – 400 km

The values of A,B,C,D constants, for a short transmission line, are respectively
(a) Z, 0, 1 and 1
(b) 0, 1, 1 and Z
(c) 1, Z, 0 and 1
(d) 1, 1, Z and 0