Multiple Choice
A non-dimensional number generally associated with natural convection heat transfer is
A) Prandtl number
B) Weber number
C) Peclet number
D) Nusselt number
E) Grashof number
Correct Answer:

Verified
Correct Answer:
Verified
Q9: For temperature below -40°C which one of
Q10: Which of the following material has highest
Q11: The quantity of heat required to change
Q12: A black body absorbs all radiations. As
Q13: The value of the wavelength for maximum
Q15: The material preferred for the fabrication of
Q16: Gases have poor<br>A)Absorptivity<br>B)Transmissivity<br>C)Reflectivity<br>D)Reflectivity + absorptivity<br>E)Absorptivity + transmissivity
Q17: The unit of thermal diffusivity is<br>A)m<sup>2</sup>/hr°C<br>B)m<sup>2</sup>/hr<br>C)m/hr°C<br>D)kcal/m<sup>2</sup>-hr<br>E)m/hr
Q18: A body which transmits all the radiations
Q19: The process of removal of oil from