Heat Transfer - Study Mode
[#296] __________ paint has the maximum absorption coefficient.
Correct Answer
(A) Black
[#297] A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun?
Correct Answer
(C) Black paint
[#298] The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities $${varepsilon _{ ext{x}}}$$ & $${varepsilon _{ ext{y}}}$$ is given by
Correct Answer
(D) $$frac{{{varepsilon _{ ext{x}}} + {varepsilon _{ ext{y}}}}}{{{varepsilon _{ ext{x}}} + {varepsilon _{ ext{y}}} - {varepsilon _{ ext{x}}} cdot {varepsilon _{ ext{y}}}}}$$
[#299] Heat transfer co-efficient (h 1 ) for liquids increases with
Correct Answer
(A) Increasing temperature
[#300] Baffle spacing
Correct Answer
(C) Should be less than the inside diameter of the shell