1
GATE EE 2008
+1
-0.3
An extra high voltage transmission line of length $$300$$ km can be approximate by a lossless line having propagation constant $$\beta = 0.00127$$ radians per km. then the percentage ratio of line length to wavelength will be given by
A
$$24.24$$%
B
$$12.12$$%
C
$$19.05$$%
D
$$6.06$$%
2
GATE EE 2007
+1
-0.3
Consider the transformer connections in a part of a power system shown in the figure. The nature of transformer connections and phase shifts are indicated for all but one transformer. Which of the following connections, and the corresponding phase shift $$\theta ,$$ should be used for the transformer between $$A$$ and $$B$$?
A
Star $$-$$ $$\,\left( {\theta = {0^ \circ }} \right)$$
B
Star $$-$$ Delta $$\,\left( {\theta = {-30^ \circ }} \right)$$
C
Delta $$-$$ Star $$\,\left( {\theta = {30^ \circ }} \right)$$
D
Star $$-$$ Zigzag $$\,\left( {\theta = {30^ \circ }} \right)$$
3
GATE EE 2007
+1
-0.3
Consider a bundled conductor of an overhead line consisting of three identical sub-conductors placed at the corners of an equilateral triangle as shown in figure. If we neglect the charges on the other phase conductors and ground, and assume that spacing between sub-conductors is much larger than their radius, the maximum electric field intensity is experienced at
A
Point $$X$$
B
Point $$Y$$
C
Point $$Z$$
D
Point $$W$$
4
GATE EE 2006
+1
-0.3
The concept of an electricity short, medium and long line is primarily based on the
A
Nominal voltage of the line
B
Physical length of the line
C
Wavelength of the line
D
Power transmitted over the line
EXAM MAP
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