1
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
2
GATE EE 2001
MCQ (Single Correct Answer)
+1
-0.3
A lossless radial transmission line with surge impedance loading
A
Takes negative VAR at sending end and zero VAR at receiving end.
B
Takes positive VAR at sending end and zero VAR at receiving end.
C
Has flat voltage profile and unity power factor at all points along it.
D
Has sending end voltage higher than receiving end voltage and unity power factor at sending end.
3
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
Corona losses are minimized when
A
Conductor size is reduced.
B
Smooth conductor is reduced.
C
Sharp points are provided in the line hardware.
D
Current density in conductors is reduced.
4
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
An overhead line having a surge impedance of $$400$$$$\Omega $$ is connected in series with an underground cable having a surge impedance of $$100$$$$\Omega $$. If a surge of $$50$$ $$kV$$ travels from the line end towards the cable junctions, the value of the transmitted voltage wave at the junction is
A
$$30$$ kV
B
$$20$$ kV
C
$$80$$ kV
D
$$-30$$ kV
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