1
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
A $$3$$-phase, $$11$$-$$kV$$ generator feeds power to a constant power unity power factor load of $$100$$ $$MW$$ through a $$3$$-phase transmission line. The line-to-line voltage at the terminals of the machine is maintained constant at $$11$$ $$kV$$. The per unit positive sequence impedance of the line based on $$100$$ $$MVA$$ and $$11$$ $$kV$$ is $$j$$ $$0.2$$. The line to line voltage at the load terminals is measured to be less than $$11$$ $$kV$$. The total reactive power to be injected at the terminals of the load to increase the line-to-line voltage at the load terminals to $$11$$ $$kV$$ is
A
$$100$$ MVAR
B
$$10.1$$ MVAR
C
$$-100$$ MVAR
D
$$-10.1$$ MVAR
2
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
Bundled conductors are mainly used in high voltage overhead transmission lines to
A
Reduce transmission line losses
B
Increase mechanical strength of the line
C
Reduce corona
D
Reduce sag
3
GATE EE 2002
MCQ (Single Correct Answer)
+1
-0.3
Consider a long, two-wire line composed of solid round conductors. The radius of both conductors is $$0.25$$ cm and the distance between their centers is $$1$$m. If this distance is doubled, then the inductance per unit length.
A
Doubles
B
Halves
C
Increases but does not double
D
Decreases but does not halve
4
GATE EE 2002
MCQ (Single Correct Answer)
+1
-0.3
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at
A
The upper surface of the conductor
B
The lower surface of the conductor
C
The ground surface
D
Midway between the conductor and ground
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