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WorksheetsRenewable Energy (Chapter 2)
Total questions: 10
Worksheet time: 5mins
Which of the following statements best explains why second-generation biofuels are considered more sustainable than first-generation biofuels?
They are derived from fossil fuels and produce higher energy yields.
They use non-food biomass, reducing competition with food crops.
They are synthesized in laboratories using only solar energy.
They are blended with diesel to reduce engine wear.
What is the primary advantage of using algae as a source of bioenergy?
Algae grow only in tropical climates.
Algae require complex land-based irrigation systems.
Algae can produce high lipid content suitable for biodiesel.
Algae cultivation reduces photosynthesis in nearby plants.
Which of the following bioenergy conversion processes is primarily used to produce biogas from organic waste?
Pyrolysis
Fermentation
Anaerobic digestion
Transesterification
What is the basic principle behind the generation of electricity in a hydroelectric power plant?
Conversion of heat energy into electricity
Conversion of chemical energy into electricity
Conversion of gravitational potential energy of water into mechanical energy and then into electricity
Conversion of solar energy into electricity
Which component of a hydroelectric power plant is responsible for converting mechanical energy into electrical energy?
Dam
Turbine
Generator
Penstock
The function of the penstock in a hydroelectric power plant is to:
Store water for future use
Direct water flow towards the turbine under pressure
Measure the water level
Convert water energy into electrical energy
Run-of-the-river hydroelectric systems are characterized by:
Large water reservoirs and consistent power output
Use of ocean tides for power generation
Little or no water storage and reliance on natural river flow
High greenhouse gas emissions
Which of the following is a major environmental concern associated with large hydroelectric dams?
Air pollution
Depletion of ozone layer
Displacement of communities and aquatic ecosystem disruption
Increase in ocean acidity
Which type of turbine is typically used for high-head hydroelectric power plants?
Kaplan turbine
Pelton wheel
Francis turbine
Cross-flow turbine
Pumped-storage hydroelectricity works on the principle of:
Using ocean waves to create electricity
Releasing water stored in high-elevation tanks only during emergencies
Storing electricity in water form during low demand and generating electricity during peak demand
Using solar power to pump water
