ISRO Scientist or Engineer Mechanical 2020 Question 28

Question 28

For a surface, the direct and diffuse components of the solar radiation are 400 and 300 $$\frac{W}{m^{2}}$$ and the direct radiation makes 60 deg angle with the normal .If the surface temperature is 300 K and effective sky temperature is 200 K , Calculate net rate of radiation of heat transfer .(Assume solar absorptivity and emmissivity as 0.1 each;For calculation take Stefan Boltzmanns constant as G \times 10^{-8} $$\frac{W}{m^{2}}.K^{4}$$)



Create a FREE account and get:

  • Download Maths Shortcuts PDF
  • Get 300+ previous papers with solutions PDF
  • 500+ Online Tests for Free

Comments
Shani Pal

1 year, 5 months ago

Abe chutiya ho kya

Register with

OR

Boost your Prep!

Download App