Explore topic-wise MCQs in Power Systems.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Power Systems knowledge and support exam preparation. Choose a topic below to get started.

1.

Suppose the transmission line is loaded with its surge impedance, the receiving-end voltage is greater than sending end voltage.

A. True
B. False
Answer» C.
Discussion
2.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. If the voltage regulation is reduced to 50%, then the receiving end current at this operation mode will be _____________

A. 526 A
B. 549 A
C. 521 A
D. 580 A
Answer» B. 549 A
Discussion
3.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. If the voltage regulation is reduced to 50%, then the power factor angle at this operation mode will be ________

A. 18.04 , lagging
B. 18.04 , leading
C. 21.06 , leading
D. 21.06 , lagging
Answer» B. 18.04 , leading
Discussion
4.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. If the voltage regulation is reduced to 50%, then the power factor at this operation mode will be ____________

A. 0.95, lagging
B. 0.92, leading
C. 0.95, lagging
D. 0.90, leading
Answer» B. 0.92, leading
Discussion
5.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. If the voltage regulation is reduced to 50%, then the power factor angle at this operation mode will be _____________

A. 18.04
B. 8.04
C. 21.06
D. 12
Answer» B. 8.04
Discussion
6.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. If the voltage regulation is reduced to 50%, then the power factor at this operation mode will be _________________

A. 0.95
B. 0.92
C. 0.74
D. 0.90
Answer» B. 0.92
Discussion
7.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. The new sending end voltage at the half the voltage regulation is _____________

A. 10.84 kV
B. 11.84 kV
C. 8.84 kV
D. 16.2 kV
Answer» B. 11.84 kV
Discussion
8.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. The half the voltage regulation will be _____________

A. 8.4 %
B. 16.8 %
C. 14.2%
D. 10.5%
Answer» B. 16.8 %
Discussion
9.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. Identify the transmission line and the voltage regulation.

A. STL, 11.68%
B. MTL, 11.68
C. STL, 21.5%
D. MTL, 14.2%
Answer» B. MTL, 11.68
Discussion
10.

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39 and 3.96 . The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. The voltage regulation will be _______

A. 16.8 %
B. 18.8%
C. 21.75%
D. 12.8%
Answer» B. 18.8%
Discussion