1
The angle made by the plane surface with the horizontal is known as
Answer: Slope
Questions
3
Solar radiation flux is usually measured with the help of a
Answer: Pyranometer
4
The zenith angle is the angle made by the sun’s rays with the ____ to a ______ surface.
Answer: normal, horizontal
6
Absorption of Solar radiations at earth’s surface occur due to presence of
Answer: All of the above
7
The following is (are) laws of black body radiation.
Answer: both (A) and (B)
8
The extraterrestrial radiation flux varies by ____ % over a year.
Answer: ± 3.3
10
The sun subtends an angle of _____ minutes at the earth’s surface.
Answer: 32
11
In the paraboloid dish concept, the concentrator tracks the sun by rotating about
Answer: Two axes
12
Which of the following type of collector is used for low temperature systems?
Answer: Flat plate collector
13
The following type of energy is stored as latent heat
Answer: Thermal energy
15
The efficiency of various types of collectors ______ with _______ temperature.
Answer: decreases, increasing
16
The collection efficiency of Flat plate collector can be improved by
Answer: evacuating the space above the absorber plate
17
A liquid flat plate collector is usually held tilted in a fixed position, facing _____ if located in the northern hemisphere.
Answer: South
18
The following is indirect method of Solar energy utilization
Answer: Geomorphology
19
The power from the sun intercepted by the earth is approximately
Answer: 1.8 x 1011 MW
