MCQs on Power Systems


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01․ For 132 kV system, the reactance and capacitance up to the location of the CB is 3 Ω and 0.015 μF respectively. The maximum value of RRRV is
10.01 kV / μs.
9.01 kV / μs.
12.2 kV / μs.
2.0 kV / μs.

Under construction.

02․ The arc voltage produced in an AC circuit breaker is always
in phase opposition with the arc current.
in phase with the arc current.
lagging the arc current by 90°.
leading the arc current by 90°.

Under construction.

03․ Which of the following circuit breakers produce least arc energy?
Air blast CB.
Air break CB.
Minimum oil CB.
Plain oil CB.

Under construction.

04․ A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be
51.61 MW.
57.5 MW.
53 MW.
52 MW.

Under construction.

05․ A generating station has a maximum demand of 50 MW a load factor of 60 %, a plant capacity factor of 45 % and if the plant while running as per schedule were fully loaded. The daily energy produced will be
720 MW.
740 MW.
730 MW.
710 MW.

Under construction.

06․ When bundle conductor are used in place of single conductor the effective inductance and capacitance will respectively
decrease and increase.
increase and remain unaffected.
decrease and remain unaffected.
increase and decrease.

Under construction.

07․ The conductor of a 10 Km long single phase, two wire line are separated by a distance of 1.5 m the diameter of each conductor the inductance of the circuit is
23.8 mH.
23.33 mH.
25.8 mH.
21.2 mH.

Under construction.

08․ A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is
4.65 Ω / phase.
2.26 Ω / phase.
8.06 Ω / phase.
6.06 Ω / phase.

Under construction.

09․ The load duration curve for a system is 8 hours 30 MW, 16 hours 25 MW and 24 hours 20 MW. The load factor will be
1.3.
0.83.
0.25.
0.44.

Under construction.

10․ For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to
V.
V2.
1 / V2.
1 / V.

Under construction.

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