C:-3 and 4
D:-All of the above
Correct Answer:- Option-C
Question75:-Power loss due to corona does not depend on
A:-Diameter of the conductor
B:-Height of the conductor
C:-Spacing between conductors
D:-Line voltage
Correct Answer:- Option-B

Question76:-In symmetrical components, the operator '‘a' rotates the vector
through in the direction.

A:-90°, clockwise

B:-90°, anti-clockwise
C:-120°, clockwise
D:-120°, anti-clockwise
Correct Answer:- Option-D

Question77:-The various power system faults are

1. Single Line to Ground fault (LG)

2. Line to Line fault (LL)

3. Double line to Ground fault (LLG) and

4. Three phase faults (LLL/LLLG)

If these faults are arranged in the order of increasing severity is

A:-1, 2, 3,4
8:-3, 4, 1, 2
(:-4, 3, 2, 1
0:-4, 3, 1, 2
Correct Answer:- Option-A

Question78:-lf A represents value of steady state stability limit and B represents
value of transient stability limit, which one of the following expression is true?

A:-A>B

B:-A=B

(:-^ < 8

0:-4 + 8 = 1

Correct Answer:- Option-A

Question79:-A three phase OHT line has its conductors horizontally spaced with
spacing equal to d between adjacent conductors. If the conductors of the line are
re-arranged to form an equilateral triangle of sides equal to d; then

A:-Average capacitance as well as average inductance will increase

B:-Average capacitance will decrease but the average inductance will increase