renewable

1. What are the components of a wind power system?

• Electrical generator
• Sensors & control
• Shaft with mechanical gear
• All of the above

2. Which one of the following is a stand-alone PV application?

• Solar water pumping
• Battery charging
• Both a and b
• None of the above

3. Why are some energy sources called nonrenewable?

• Because they are unlimited.
• Because they can be used in transportation.
• Because they are economical attractive
• None of the previous

4. What is hydrogen, and what is its role in a renewable energy system?

• It is gaseous matter existed in liquid state in nature
• It is the ammonia mixed with nitrogen
• It is gaseous matter that can be used as energy source and storage
• None of the above

5. The impact of renewable energy use on the environment is:

• Negligible in all aspects.
• Quicker if projects implemented at low budget
• Highly Positive in the long run, environmentally and economically
• The same impact as that for the nonrenewable energies

6. What is the origin of solar radiation?

• It is the energy of helium in the sun core
• It is the thermonuclear conversion of helium to hydrogen in the sun core
• It is the chemical organic reactions in the sun core
• It is the thermonuclear conversion of hydrogen to helium in the sun core

7. The main components to harness solar thermal and electrical energy are:

• Turbines and engines
• Fly-wheels and solar collectors
• Positive displacement machines
• Solar collectors and solar panels

8. What are the main components of solar thermal energy systems?

• Solar collector, Photovoltaic panels inverters, and batteries
• Solar heater, batteries, circulation pump, & controllers
• Solar heater, storage tank, circulation pump, & controllers
• Solar collector, circulation pump, inverters, and batteries

9. What are the main components of solar electrical energy systems?

• Hydraulic turbines, charge controllers, & solar collectors.
• Solar heater, batteries, circulation pump, & controllers
• Photovoltaic panels, charge controller, inverters, & batteries, & fixing frame
• None of the previous

10. What are the main components of concentrated solar power systems?

• Flat plate collectors, controller, circulation pump, & thermal storage tank
• Heliostat, receiver, cold and hot storage tanks, & heat fluid circulation pipes
• Dish reflector, Stirling engine, moving table, & compressor
• None of the above