Electrical Power Generation MCQs Part 7
a. Pelton turbine is:
- Impulse turbine
- Reaction turbine
- Both of these
- None of these
Correct answer: 1. Impulse turbine
b. For high values of RPM such as >1000 RMP the recommended type of turbine is:
- Pelton
- Kaplan
- Francis
- None of these
Correct answer: 2. Kaplan
c. Usually __________ type of turbine is recommended for the axial flow:
- Pelton
- Kaplan
- Deriaz
- Francis
Correct answer: Kaplan
d. The power plant/station which is strongly recommended for dealing with the peak load conditions is:
- Hydroelectric power station
- Diesel power station
- Tidal unit station
- Steam power station
Correct answer: 2. Diesel power station
e. The statement: Size of diesel engine increases with the increase of cutoff ratio. is:
- Wrong
- Correct
- Partially correct
- Size of the engine has nothing to do with the cutoff ratio
Correct answer: 1. Wrong
Explanation: Size of engine increases with the decrease of cutoff ratio.
f. A Hydro-electric power station is considered to be Super-hydro electric power station if its capacity is:
- 1 – 10 MW
- 10 – 100 MW
- 100 – 1000 MW
- > 1000 MW
Correct answer: 4. 1000 MW
g. The correct statement about cooling water used in the condenser of coal power station:
- The cooler the water, the lower will be the efficiency
- The cooler the water, the higher will be the efficiency
- The temperature of the water does not impact the efficiency
- Cooling water should never be used in the condenser
Correct answer: 2. The cooler the water, the higher will be the efficiency
h. The steam in reaction turbine ________ expands in stationery nozzles:
- Fully
- Partially
Correct answer: 2. Partially
i. The efficiency of modern generators in coal power stations can be up to:
- 44%
- 67%
- 89%
- 96%
Correct answer: 4. 96%
j. A two pole generator in 60 Hz grid should be turned at ___________:
- 1800 RPM
- 3600 RPM
- 7200 RPM
- 9600 RPM
Correct answer: 1. 3600 RPM
Explanation: Speed = 120 * f / P
Speed = 120 * 60 / 2 = 3600 RPM
Continue reading
- Electrical power generation MCQs Part 1
- Electrical power generation MCQs Part 2
- Electrical power generation MCQs Part 3
- Electrical power generation MCQs Part 4
- Electrical power generation MCQs Part 5
- Electrical power generation MCQs Part 6
- Electrical power generation MCQs Part 7
- Electrical power generation MCQs Part 8
- Electrical power generation MCQs Part 9
- Electrical power generation MCQs Part 10