The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the
A) Heating volume
B) Heat transfer area
C) Nusselt number
D) None of these
Correct Answer:
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Q11: Which of the following has the minimum
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
Q17: Reynold's analogy states that
A)Nst ? f
B)Nst ?
Q18: In case of a vertical tube evaporator,
Q19: Which of the following has the minimum
Q20: Low thermal conductivity of heat insulating materials
Q21: For an ideal black body
A)Absorptivity = 1
B)Reflectivity
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