Power systems - Generation - Electrical Engineering (MCQ) questions and answers

1)   What is the superior quality of coal called?

a. Anthracite
b. Coke
c. Bituminous
d. Peat
Answer  Explanation 

ANSWER: Bituminous

Explanation:
No explanation is available for this question!
2)   The maximum demand on the power system is 100 MW. If the annual load factor is 40%. Calculate the total energy generated in a year.

a. 3761 * 105 kWh
b. 4174 * 105 kWh
c. 3504 * 105 kWh
d. 3500 * 105 kWh
Answer  Explanation 

ANSWER: 3504 * 105 kWh

Explanation:
No explanation is available for this question!
3)   The identification of a two stroke engine is given by

a. Cooling system
b. Lubrication system
c. Absence of valve
d. All of these
Answer  Explanation 

ANSWER: Absence of valve

Explanation:
No explanation is available for this question!
4)   What does the area under the load curve represent?

a. System voltage
b. Current
c. Energy consumed
d. Maximum demand
Answer  Explanation 

ANSWER: Energy consumed

Explanation:
No explanation is available for this question!
5)   Tidal energy development needs

a. Huge capacity and long construction time.
b. Huge capacity and low construction time.
c. Low capacity and long construction time.
d. Low capacity and low construction time.
Answer  Explanation 

ANSWER: Huge capacity and long construction time.

Explanation:
No explanation is available for this question!
6)   The definition of the draught system is

a. A device used to pull in air.
b. The difference between absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
c. The sum of the absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
d. A device used to pull out air.
Answer  Explanation 

ANSWER: The difference between absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.

Explanation:
No explanation is available for this question!
7)   Determine the average demand of a plant if its load factor and maximum demand are 0.60 and 30 MW.

a. 20 MW
b. 18 MW
c. 50 MW
d. 13 MW
Answer  Explanation 

ANSWER: 18 MW

Explanation:
No explanation is available for this question!
8)   A consumer having lower power factor contributes towards which factor?

a. Semi fixed charges.
b. Fixed charges.
c. Running charges.
d. Penalty is imposed.
Answer  Explanation 

ANSWER: Fixed charges.

Explanation:
No explanation is available for this question!
9)   A thermal generating station has a installed capacity of 15 MW and supplies a daily load of 10 Mw for 12 hours and 5 MW for remaining 12 hours. The plant capacity factor for this station is _______.

a. 1
b. 0.75
c. 0.67
d. 0.5
Answer  Explanation 

ANSWER: 0.5

Explanation:
No explanation is available for this question!
10)   Calculate the overall efficiency of the diesel plant if the fuel consumption is 0.24 kg per kWh and the calorific value of the fuel being 10000 kcal/kg.

a. 30.78
b. 35.83
c. 28.73
d. 36.86
Answer  Explanation 

ANSWER: 35.83

Explanation:
No explanation is available for this question!
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