FREE Bachelor of Electrical Engineering Power System Questions and Answers

Question 1

Which of the following power systems can have a single line diagram?

Accepted Answer

Balanced power system

Answer

Power system with LG fault

Answer

Power system with LLG fault

Answer

Power system with LL fault

Question 2

If a power system has __________, it will operate with greater flexibility.

Accepted Answer

Various types of power plants operating in combination

Answer

Only Base load plants operating in combination

Answer

Only thermal power plants operating in combination

Answer

Only Peak load plants operating in combination

Question 3

A single line does not adequately represent:

Accepted Answer

Neutral wire of transmission lines

Answer

Star connection of transformer winding

Answer

Ratings of machines

Answer

Delta connection of transformer winding

Question 4

The zero and maximum regulation points for a particular power system will be at the impedance angle of

Accepted Answer

45

Answer

50

Answer

35

Answer

60

Question 5

A power system with 200 buses has 160 PQ buses. The minimal number of simultaneous equations that must be solved in order to arrive at a load flow solution using N-R in polar coordinates is .

Accepted Answer

359

Answer

345

Answer

334

Answer

357

Question 6

80 percent of a 50 bus power system is sparse (Ybus). There will be __________ transmission lines in total.

Accepted Answer

225

Answer

456

Answer

345

Answer

563

Question 7

A big power system network's _______ is shown in the provided graph.

Accepted Answer

L-G fault

Answer

Ratings of machines

Answer

Three phase motor getting short

Answer

Any of the mentioned

Question 8

The entire protection is what a protection system engineer intends to offer; he can accomplish this via .

Accepted Answer

three phase fault relays and two earth fault relays

Answer

a two phase fault relays and three earth fault relays

Answer

a two phase fault relays and two earth fault relays

Answer

two phase fault relays and three earth fault relays

Question 9

A power system can handle up to 15 MW of load. 50% of the annual load factor. If the plant capacity factor is 40%, the reserve capacity of the plant is .

Accepted Answer

3.75 MW

Answer

8.75 MW

Answer

7.75 MW

Answer

46.75 MW

Question 10

The load curve's area under the curve is an indication of

Accepted Answer

number of units generated

Answer

load factor

Answer

maximum demand

Answer

the average load on power system