A. solar, wind and biomass
B. fossil fuels, hydropower and nuclear energy
C. wood, animal wastes and agriculture wastes
D. none of the above
Related Mcqs:
- For the safety of a steam boiler the number of safety valves fitted are____________?
A. four
B. three
C. two
D. one - In fuel cell, the ___________ energy is converted into electrical energy?
A. mechanical
B. chemical
C. heat
D. sound - The energy radiated by sun on a bright sunny day is approximately______________?
A. 700 W/m2
B. 800 W/m2
C. 1 kW/m2
D. 2 kW/m2 - In Rankine cycle the work output from the turbine is given by__________?
A. change of internal energy between inlet and outlet
B. change of enthaply between inlet and outlet
C. change of entropy between inlet and outlet
D. change of temperature between inlet and outlet - The draught in locomotive boilers is produced by_____________?
A. forced fan
B. chimney
C. steam jet
D. only motion of locomotive - The effect of considering friction in steam nozzles for the same pressure ratio leads to_________?
A. increase in dryness fraction of exit steam
B. decrease in dryness fraction of exit steam
C. no change in the quality of exit steam
D. decrease or increase of dryness fraction of exit steam depending upon inlet quality - Steam turbines are governed by the following methods_____________?
A. Throttle governing
B. Nozzle control governing
C. By-pass governing
D. all of the above - Caking coals are those which__________?
A. burn completely
B. burn freely
C. do not form ash
D. form lumps or masses of coke - Which material is used to made a solar cell_______________?
A. aluminum
B. Germanium
C. silicon
D. scandium - In hydro power plant, the graph between discharge and time is known as___________?
A. monograph.
B. load graph.
C. discharge graph.
D. hydro graph
