Top 550+ Solved Energy Conversion MCQ Questions Answer
Q. In a thermal power plant, among the variable costs, fuel accounts for nearly
a. 20 to 25 percent of total cost
b. 30 to 50 percent of total cost
c. 75 to 80 percent of total cost
d. 90 to 98 percent of total cost
e. None of the above
Q. Alternating current power is transmitted at high voltages
a. to safeguard against pilferage
b. to minimise transmission losses
c. to reduce cost of generation
d. to make the system reliable
e. None of the above
Q. For low head and high discharge the hydraulic turbine preferred is
a. Jonval turbine
b. Francis turbine
c. Kaplan turbine
d. Fourneyron turbine
e. Pelton wheel
Q. The initial cost of an equipment is Rs. 20 lakhs and depreciated cost after ten years is Rs. 15 lakhs. The useful life of the equipment is
a. 5 years
b. 15 years
c. 20 years
d. Cannot be determined on the basis of the information provided
e. 10 years
Q. The output of a solar cell is of the order of
a. 0.1 W
b. 0.5 W
c. 1 W
d. 5 W
e. None of the above
Q. Radio carbon has half life of
a. 17 years
b. 117 years
c. 557 years
d. 5770 years
e. None of the above
Q. Candela is the unit of
a. Luminous flux
b. Luminous intensity
c. Wavelength
d. Brightness
e. None of the above
Q. Direct conversion of heat into electric power is possible through
a. batteries
b. fuel cells
c. thermionic converters
d. All of the above
e. None of the above
Q. Bottoming cycle is common in
a. cement plants
b. sugar millls
c. paper mills
d. All of the above
e. None of the above
Q. Which of the following domestic utility item consumes maximum power?
a. Ceiling fan
b. Exhaust fan
c. Cooking range
d. Refrigerator
e. Mixer grinder
Q. Compressed air is required generally in which of the following power plants?
a. Nuclear power plant
b. Hydro-electric power plant
c. Steam power plant
d. Diesel engine power plant
e. All of the above
Q. In steam power plants exhaust steam from turbine goes to
a. cooling tower
b. economiser
c. condenser
d. air preheater
e. None of the above
Q. Satellites are powered by
a. Batteries
b. Solar cells
c. Photo electric cells
d. Thermo-electric generators
e. Thermoionic converters