Which of the following has the minimum absorptivity?
A) Aluminium foil
B) Coal dust
C) Refractory bricks
D) Iron plates
Correct Answer:
Verified
Q6: What is Nusselt number?
A)CP. µ/k
B)hD/k
C)h. CP/µ
D)CP. µ/h
Q7: If h1 = inner film co-efficient and
Q8: In the equation Q = UA?t; ?t
Q9: Convective heat transfer, in which heat is
Q10: For a cold dilute feed to produce
Q12: Hot water (0.01 m3 /min) enters the
Q13: In a forward feed multiple effect, the
Q14: Graetz number is given by
A)mCp/kL
B)kL/mCp
C)mCp/kµ
D)kµ/mCp
Q15: Thermal diffusivity is given by
A)k/?Cp
B)?Cp/k
C)µCp/a
D)µ/hCp
Q16: The rate of heat transfer is a
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