Download Aptitude Crack
img not found img not found

Heat Transfer Refrigeration and Air Conditioning - Engineering

Q1:

Two long parallel surfaces each of emissivity 0.7 are maintained at different temperatures and accordingly have radiation heat exchange between them. It is desired to reduce 75% of the radiant heat transfer by inserting thin parallel shields of emissivity 1 on both sides. The number of shields should be

A one

B two

C three

D four

ANS:C - three

Explanation: No answer description is available.