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SSC JE 2017: Electrical Power System Rankers Quiz 2

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Question 1

The transmission line is represented as a two-port network as shown in the figure. The sending end voltage and current are expressed in terms of receiving end voltage and current for the network as
V_S = AV_R + BI_R
I_S = CVR + DI_R
where A, B, C and D are generalized circuit constants.

The condition for symmetry for the network is

Question 2

Why is a ring main distribution system preferred to a radial system?
1) Voltage drop in the feeder is less.
2) Power factor is higher.
3) Supply is more reliable

Question 3

The steady state stability limits for round rotor and salient pole 3-phase synchronous generator are attained at the values of power angle

Question 4

In a 3-phase, 5 kV, 5 MVA system, what is the base impedance?

Question 5

Which one of the following is reduced by using stock bridge damper bars on power overhead transmission lines?

Question 6

Fault calculations using computer program are usually done by

Question 7

Reactive power compensation is applied at the midpoint of an EHV line of total reactance 0.2 p.u. so as to maintain the voltage there at 0.98 p.u. The voltage at both ends of the line is 1∠0^o p.u. The steady state power transfer limit, in p.u. is

Question 8

What is the preferred type of CB to be installed in extra high voltage ac system?

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ESE & GATE EE Power Systems

Jun 23ESE & GATE EE