Heat Transfer MCQ
Test your knowledge with important Heat Transfer MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Heat Transfer MCQs on Bissoy. Bissoy App
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While the total emissivity of a perfect black body is unity, the same for a real body is
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Which of the following situations can be approximated to a steady state heat transfer system?
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Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids?
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Radiation heat losses from satisfactorily insulated high pressure boilar may be about __________ percent.
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Vibrations in the tubes of a shell and tube heat exchanger is induced due to the
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In forced convection, the Nusselt number is a function of
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Heat flux through several resistances in series in analogous to the current flowing through several
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Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer.
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Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats
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In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used
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In a forward feed multiple effect evaporator unit
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Which is the most suitable for cold viscous feed?
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Heat transfer by __________ may not necessarily require the presence of a medium.
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The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are
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Which of the following is generally considered as opaque surface towards radiations?
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Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second.
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Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid
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For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are
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With increase in temperature, the total emissivity of conductors
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Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is
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Prandtl number is the reciprocal of
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Nusselt number (for forced convection heat transfer) is a function of the __________ number.
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jH factor for heat transfer is not a function of the __________ number.
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In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator.
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For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally
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Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is
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Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is
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The steam ejector is used to
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Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is
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For evaporation of viscous solution in a multiple effect evaporator, the prefered feeding scheme is