The angle made by the plane surface with the horizontal is known as
Beam radiations are measured with
Solar radiation flux is usually measured with the help of a
The zenith angle is the angle made by the sun’s rays with the ____ to a ______ surface.
Answer: normal, horizontal
Global radiation =
Answer: Direct radiation + Diffuse Radiation
Absorption of Solar radiations at earth’s surface occur due to presence of
The following is (are) laws of black body radiation.
The extraterrestrial radiation flux varies by ____ % over a year.
The value of Solar Constant is
The sun subtends an angle of _____ minutes at the earth’s surface.
In the paraboloid dish concept, the concentrator tracks the sun by rotating about
Which of the following type of collector is used for low temperature systems?
Answer: Flat plate collector
The following type of energy is stored as latent heat
Maximum efficiency is obtained in
Answer: Paraboloid dish collector
The efficiency of various types of collectors ______ with _______ temperature.
Answer: decreases, increasing
The collection efficiency of Flat plate collector can be improved by
Answer: evacuating the space above the absorber plate
A liquid flat plate collector is usually held tilted in a fixed position, facing _____ if located in the northern hemisphere.
The following is indirect method of Solar energy utilization
The power from the sun intercepted by the earth is approximately
Direct Solar energy is used for