Pick out the wrong statement ?

Chemical Heat Transfer 01/04/2020

A. In case of heat transfer by purely forced convection, GR/Re 2 ≤ 1
B. The equivalent diameter of heat transfer for a duct of square cross-section (having each side as
‘x’) is equal to 4x
C. Distillation process is not the same as evaporation
D. The effectiveness of nucleate boiling depends basically on the ease with which the bubbles are
formed and detached from the heating surface

Related Mcqs:

    For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is________________?
    A. 1.26 h1 B. 0.794 h1 C. 0.574 h1 D. 1.741 h1...
    Multiple effect evaporation accounts for___________________?
    A. Steam economy B. Lower operating costs C. Investment economy D. None of these...
    With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?
    A. Increases B. Decreases C. Remains unchanged D. May increase or decrease; depends on its composition...
    Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place____________________?
    A. Between two bodies in physical contact with each other B. Between two bodies not in physical contact with each other C. From one part of a body to the another part of the same body D. Both B & C...
    For what value of Prandtl number, the Col-burn analogy is valid ?
    A. 0.06 to 120 B. 0.6 to 120 C. 1 to 103 D. 1 to 50...

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