Basics Of Solar Energy(Renewable Energy ) Questions and answers for exam Preparation

Question 1. What is solar radiation?

Energy radiated from the sun in all directions
Energy radiated from earth in all directions
Radiation travelling in space
Energy radiated from sun that travels in ether

Explanation:-

Answer: Option A. -> Energy radiated from the sun in all directions
Answer: (a).Energy radiated from the sun in all directions

Question 2. What are three relevant bands of solar radiation?

UV, infrared and far infrared
UV, visible and infrared
Ultrasonic, infrared and visible
UV, ultrasonic and near infrared

Explanation:-

Answer: Option B. -> UV, visible and infrared
Answer: (b).UV, visible and infrared

Question 3. Which of the following affects the amount of solar radiation received by a location or water body?

Shape of the water body
Time at night
Rotational speed of earth
Altitude and latitude

Explanation:-

Answer: Option D. -> Altitude and latitude
Answer: (d).Altitude and latitude

Question 4. Which two bands of solar radiation are majority in the total solar radiation reaching earth?

UV and visible
Visible and ultrasonic
Visible and infrared
Infrared and UV

Explanation:-

Answer: Option C. -> Visible and infrared
Answer: (c).Visible and infrared

Question 5. What is direct solar radiation?

Solar radiation directly received by earth’s surface from sun
Cosmic radiation directly received by earth’s surface
Solar radiation received by earth’s surface after reflection
Cosmic radiation received by earth’s surface after reflection

Explanation:-

Answer: Option A. -> Solar radiation directly received by earth’s surface from sun
Answer: (a).Solar radiation directly received by earth’s surface from sun

Question 6. Which of the following categories does a pyranometer belong to?

Voltmeters
Actinometers
Hall sensors
Amplifiers

Explanation:-

Answer: Option B. -> Actinometers
Answer: (b).Actinometers

Question 7. Global and diffuse solar radiation can be measured by ________

thermal actinometer
heat pumps
thermoelectric pyranometers
oscilloscopes

Explanation:-

Answer: Option C. -> thermoelectric pyranometers
Answer: (c).thermoelectric pyranometers

Question 8. Why should the beam response vary with cosine of the angle of incidence?

To account for perpendicular and parallel rays
Because cosine is the simplest mathematical function
To account for inclination of earth’s axis
Because of non-uniform dispersion of solar radiation

Explanation:-

Answer: Option A. -> To account for perpendicular and parallel rays
Answer: (a).To account for perpendicular and parallel rays

Question 9. Which of the following best describes the working of thermoelectric pyranometer?

Solar radiation → thermal e.m.f measured → thin black surface → rise in temperature until equilibrium
Solar radiation → thin black surface → rise in temperature until equilibrium → thermal e.m.f measured
Thin black surface → solar radiation → rise in temperature until equilibrium → thermal e.m.f measured
Solar radiation → rise in temperature until equilibrium → thin black surface → thermal e.m.f measured

Explanation:-

Answer: Option B. -> Solar radiation → thin black surface → rise in temperature until equilibrium → thermal e.m.f measured
Answer: (b).Solar radiation → thin black surface → rise in temperature until equilibrium → thermal e.m.f measured

Question 10. To perform irradiance measurement, which of the following is necessary?

Beam response varies with sine of the angle of incidence
Beam response varies linearly with angle of incidence
Beam response is constant with varying angle of incidence
Beam response varies with cosine of the angle of incidence

Explanation:-

Answer: Option D. -> Beam response varies with cosine of the angle of incidence
Answer: (d).Beam response varies with cosine of the angle of incidence