Agricultural Engineering MCQ Quiz Hub

1. Which of the following is not a renewable source of energy?
Fossil fuels
Sun
Biomass
Wind

2. Which of the following is a thermal application of solar energy?
Photovoltaic
Concentrating collectors
Solar cell
Electricity

3. What is a solar collector?
A device that generates current
A device that collects and stores sunlight
A device that collects and concentrates sunlight
A device that filters sunlight

4. What is a non-concentrating solar collector?
Collects and stores sunlight
Collects and concentrates sunlight
Reflects sunlight
Directly uses the incoming global radiation

5. What is a concentrating solar collector?
Collects and concentrates sunlight on an absorber
Collects and concentrates sunlight on a reflector
Reflects sunlight
Directly uses the incoming global radiation

6. What are the applications of concentrating solar collectors?
Domestic water heating
Desalination plants
Linear focusing
Point focusing

7. How does geothermal energy work?
Uses water from the earth
Uses potential energy
Uses heat from the core of earth
Uses heat from atmosphere

8. Which of the following do heat pumps use in geothermal energy?
Earth’s variable temperature
Variable electricity
Constant electricity
Earth’s constant temperature

9. Which of the following is an application of hydro energy?
Flood risk management
Generating wind
Manufacturing
Environment damage

10. Hydro energy provide water for irrigation
False
True

11. Why are renewable resources preferred?
Cheap
Profitable
Release little greenhouse gases
Are freely available

12. Which of the following is a thermal application of biomass?
Freezing
Anaerobic Digestion
Fermentation
Combustion

13. Why is biomass gasification useful?
To get gases which can be used as fuel
To reduce solid waste
To increase solid waste
Biomass gasifiers are economical

14. Which of the following use producer gas from biomass?
Hydrothermal plant
Paper and textile industry
Wind plants
Fuel cells

15. Biomass is used to produce electricity.
True
False

16. Which is an organic matter produced by plants in direct or indirect forms?
Solar energy
Biomass
Wind energy
Bio-fuel

17. What type of energy is biomass energy?
Conventional energy
Non renewable
Commercial energy
Sustainable energy

18. The use of biomass energy has the potential to greatly reduce greenhouse gas emissions.
True
False

19. __________ is made by combining alcohol with vegetable oil, animal fat or recycled cooking grease.
Biodiesel
Biomass
Bioelectricity
Syngas

20. What type of fire system is used in Bio power?
Hand firing
Mechanical stoke firing
Direct firing
Indirect firing

21. Mixing biomass with fossil fuels in conventional power plants is referred to as ___________
Agitation
Infuse
Co-firing
Interbreed

22. Which gas can be chemically converted into other fuels or products, burned in a conventional boiler, or used instead of natural gas in gas turbine?
Freon
Natural gas
Syngas
Noble gas

23. What does natural decay of biomass produces?
Ozone
Methane
Ethane
Hydrogen

24. What is used to decompose organic matter in absence of oxygen in closed reactors?
Slugs
Fungi
Natural consortia
Methane

25. What is Ethanol called?
Phenol
Alcohol
Amino acid
Butanol

26. Which type of bio products include Antifreeze, plastics, glues, artificial sweeteners, and gel for toothpaste?
Bio products made from sugars
Bio products made by waste products
Bio products made from decomposition
Bio products made from catalytic cracking

27. What is BTU used to measure?
Heat content
Area
Density
Volume

28. Which of the following can be classified under solid biomass?
Agricultural residues
Waste water
Industrial effluents into rivers
Plastic

29. What are energy crops?
Crops grown to remove insects
Crops grown to be used in generating energy
Crops grown to feed people
Crops that produce energy

30. Which of the following are examples of energy crops?
Banyan
Mango
Herbaceous and woody
Apple and herbaceous

31. What are herbaceous crops?
Insecticides
Rice
Agricultural fertilizers
Agricultural byproducts

32. Which of the following are examples of woody biomass?
Fallen trees due to natural disasters
Mint
Columbine
Agricultural byproducts

33. Which of the following are examples of lipids?
Sugar
Palm oil
Glucose
Cellulose

34. Which of the following can be used to replenish nutrients in soil?
Steel
Soda
Biomass ash
Coal ash

35. Which of the following is an example of short rotation coppice?
Maize
Wheat
Corn
Willow

36. Algae are used as feedstocks for bioenergy.
True
False

37. Which of the following found in municipal waste can be used as biomass?
Agricultural residue
Kitchen waste
Residential garbage
Plastic covers

38. Land fill is an example of wet waste.
False
True

39. __________ wastes are used as methane boosters.
Agricultural
Forestry
Industrial
Municipal

40. __________ biomass is used for waste water treatment.
Agricultural
Industrial
Municipal
Aquatic

41. Which of the following parameters is used to define sustainability of biogas feedstock?
Heating value
Calorific value
C:N ratio
Thermal voltage

42. Which of the following is not a biomass resource?
Animal wastes
Forestry residue
Agricultural residue
Sunlight

43. Which of the following is a substrate for biogas production?
Municipal and residential waste
E-waste
Metallic waste
Gaseous effluents

44. Which of the following is a preferred substrate for biogas production? Note that TS stands for total solids.
Less than 1% TS
20-40% TS
1-5% TS
5-10% TS

45. What are the categories for organic dry matter on the basis of total solids (TS)?
Low grade, medium grade, high grade and fixed bed
Low grade, medium grade, fluidized bed and fixed bed
Low grade, medium grade, high grade and solids
Downdraft, circulation fluidized bed, high grade and fixed bed

46. Which among the following is the best source for methane production?
Metallic scrap
E-waste
Plastic waste
Water hyacinth

47. Which of the following is used to produce biogas from biomass?
Anaerobic treatment
Aerobic treatment
Fermentation
Pyrolysis

48. Which of the following best indicates the steps of anaerobic digestion?
Waste water feed → biogas storage → generator → biogas
Waste water feed → digester → biogas → biogas storage → generator
Generator → waste water feed → digester → biogas → biogas storage
Waste water feed → biogas → digester → biogas storage → generator

49. Which of the following best indicates the steps inside an anaerobic digester?
Hydrolysis → methanogenesis → acetogenesis → acidogenesis
Hydrolysis → acidogenesis → methanogenesis → acetogenesis
Hydrolysis → acidogenesis → acetogenesis → methanogenesis
Methanogenesis → acidogenesis → acetogenesis → hydrolysis

50. What occurs in the hydrolysis step of anaerobic digestion?
Large polymers combine with water molecules
Large polymers break down to form water molecules
Small polymers combine to form large polymers with the help of water molecules
Large polymers break down into amino acids, fatty acids and simple sugars