1
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
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
The load carrying capability of a long AC transmission line is
A
Always limited by the conductor size
B
Limited by stability considerations.
C
Reduced at a low ambient temperatures.
D
Decreased by the use of bundled conductors of single conductors.
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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