A. Pool
B. Nucleate
C. Transition
D. Film
Correct Answer: Film ✔
Last Updated: March 03, 2019
Related MCQs
- The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m2.K. At steady state, the temperature of the right face in °C is__________?
- Agitated film evaporator is suitable for concentrating __________ liquids?
- Kirchoff’s law is applicable to__________?
- The Dittus-Boelter equation for convective heat transfer [(i.e. h = 0.023 (K/D) (Re)0.8 (Pr)0.4] cannot be used for__________?
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- A composite flat wall of a furnace is made of two materials ‘A’ and ‘B’. The thermal conductivity of ‘A’ is twice of that of material ‘B’, while the thickness of layer of ‘A’ is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material ‘A’ is__________?
- In forced convection, the heat transfer depends on __________?
- Kg of liquid evaporated per hour in an evaporator is defined as its__________?
- In SI units, fouling factor is expressed in __________?
- Radiation heat losses from satisfactorily insulated high pressure boiler may be about __________ percent?
- In the free convection regime of pool boiling, the heat flux is proportional to__________?
- Prandtl number is the ratio of__________?
- Prandtl number is given by__________?
- Trap is used to remove __________ from steam pipe lines?
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- Economy of a multiple effect evaporator depends upon the __________?
- A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of material A is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C?
- Temperature profile in steady state heat transfer is__________?
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- A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun ?
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- Heat transfer by __________ may not necessarily require the presence of a medium?
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- Prandtl number is the reciprocal of__________?
- For a multipass shell and tube heat exchanger, the LMTD correction factor is always__________?
- Thermal conductivity of a gas at low density, __________ with increase in temperature ?
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- With increase in temperature, the thermal conductivity of a gas __________?
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- An ejector is used to__________?
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- The units of resistance to heat transfer is __________?
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