An overhead 3- phase transmission line has a conductor of section 90 mm and effective diameter of 1cm and is placed at the vertices of an equilateral triangle of side 1 metre. The line is 20 km long and delivers a load of 10MW at 33KV and power factor of 0.8 lagging .Neglect capacitance of the line and assumes that at a temperature of 200 C. the resistance of copper of 1mm-is 1 580 per metre when the section is 1mm2. Use the above information to answer Q46 to Q50. Determine the total resistance per phase of the transmission line. a) 3.39 2 47. 46 c) 3.05 2 Determine the total inductive reactance per phase of the transmission line 6.09 0 b) 3.28 2 d) 3.83 2 e) None of the above. a) 6.62 2 48. a) 32990.05V b) 6.97 2 d) 6.40 2 e) None of the above. Determine the sending end voltage, Vs of the transmission line. c) 35688.90V b) 34266.98V d) 33976.65V e) None of the above. 49 Dotermine the porcentage regulation of the transmission line

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An overhead 3- phase transmission line has a conductor of section 90 mm- and effective diameter of
1cm and is placed at the vertices of an equilateral triangle of side 1 metre. The line is 20 km long and
delivers a load of 10MW at 33kV and power factor of 0.8 lagging .Neglect capacitance of the line and
assumes that at a temperature of 200
section is 1mm2.
the resistance of copper of 1mm-is 1 582 per metre when the
Use the above information to answer Q46 to Q50.
Determine the total resistance per phase of the transmission line.
a) 3.39 N
47.
46
c) 3.05 2
Determine the total inductive reactance per phase of the transmission line
c) 6.09 2
b) 3.28 2
d) 3.83 2
e) None of the above.
a) 6.62 N
48.
b) 6.97 2
d) 6.40 N
e) None of the above.
Determine the sending end voltage, Vs of the transmission line.
c) 35688.90V
Determine the percentage regulation of the transmission line.
a) 32990.05V
49.
b) 34266.98V
d) 33976.65V e) None of the above.
d) 7.45%
Determine the per unit transmission efficiency of the transmission line.
d) 0.92
a) 10%
b) 8.15%
c) 9.34%
e) None of the above.
50
a) 0.90
b) 0.89
c) 0.95
e) None of the above.
Transcribed Image Text:An overhead 3- phase transmission line has a conductor of section 90 mm- and effective diameter of 1cm and is placed at the vertices of an equilateral triangle of side 1 metre. The line is 20 km long and delivers a load of 10MW at 33kV and power factor of 0.8 lagging .Neglect capacitance of the line and assumes that at a temperature of 200 section is 1mm2. the resistance of copper of 1mm-is 1 582 per metre when the Use the above information to answer Q46 to Q50. Determine the total resistance per phase of the transmission line. a) 3.39 N 47. 46 c) 3.05 2 Determine the total inductive reactance per phase of the transmission line c) 6.09 2 b) 3.28 2 d) 3.83 2 e) None of the above. a) 6.62 N 48. b) 6.97 2 d) 6.40 N e) None of the above. Determine the sending end voltage, Vs of the transmission line. c) 35688.90V Determine the percentage regulation of the transmission line. a) 32990.05V 49. b) 34266.98V d) 33976.65V e) None of the above. d) 7.45% Determine the per unit transmission efficiency of the transmission line. d) 0.92 a) 10% b) 8.15% c) 9.34% e) None of the above. 50 a) 0.90 b) 0.89 c) 0.95 e) None of the above.
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