A. Black painted bodies only
B. All bodies
C. Polished bodies only
D. A black body
Correct Answer: All bodies ✔
Last Updated: March 03, 2019
Related MCQs
- Evaporation by thermo compression results in the __________?
- Use of transverse baffles in a shell and tube heat exchanger is done to increase the__________?
- Which of the following situations can be approximated to a steady state heat transfer system ?
- Heat transfer by __________ may not necessarily require the presence of a medium?
- Nusselt number is the ratio of the __________?
- Prandtl number is the reciprocal of__________?
- For a multipass shell and tube heat exchanger, the LMTD correction factor is always__________?
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- With increase in temperature, the thermal conductivity of a gas __________?
- Which area is used in case of heat flow by conduction through a cylinder ?
- The rate of emission of radiation by a body does not depend upon the__________?
- In a cooling tower, water becomes cool by__________?
- Out of the following four assumptions used in the derivation of the equation for LMTD [LMTD = (Δt1 – Δt2)/ln(Δt1/Δt2)], which one is subject to the largest deviation in practice ?
- What is the logarithmic mean of r1 and r2 ?
- The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is__________?
- The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances?
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- An ejector is used to__________?
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- Peclet number (Pe) is given by__________?
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- In sub-cooled boiling ?
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- The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation?
- Steam economy in case of a triple effect evaporator will be __________?
- In a forward feed multiple effect evaporator unit__________?
- Dropwise condensation is promoted on a/an __________ surface?
- Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger ?
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- Radiation energy is emitted by all the substances, which are above__________?
- The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is__________?
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- Prandtl number for most of dry gases is about__________?