Power System MCQ Questions & Answers Pdf - 2

Question: 6

The transmission efficiency increases with

(A) Increase in pf and increase in voltage level

(B) Increase in pf and decreae in voltage level

(C) Decrease in pf and decrease in voltage level

(D) Decrease in pf and increase in voltage level

Question: 7

When all the three phases are short circuited it gives rise to

(A) Symmetrical fault current

(B) Asymmetrical fault current

(C) Zero fault current

(D) Both a and b

Question: 8

In a nuclear reactor, chain reaction is controlled by

(A) Brass rods

(B) Graphite rods

(C) Cadmium rods

(D) Iron rods

Question: 9

The electrical stiffness of a synchronous generator connected to a very large system can be increased by

(A) Operating the generator at a much lower MW level compared to the steady state limit

(B) Increasing the synchronous reactance of the machine

(C) Reducing the excitation of the synchronous reactance of the machine

(D) Increasing the excitation or the power angle of the machine

Question: 10

The incremental transmission loss of a plant can’t be a

(A) A zero value

(B) Non zero value

(C) Positive quantity

(D) Negative quantity