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Heat Transfer

Heat Transfer
Which is the most suitable for cold viscous feed?

Parallel feed
Forward feed
Backward feed
Mixed feed

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Heat Transfer
If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ law.

Parabolic
Logarithmic
Linear
Hyperbolic

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Heat Transfer
Overall heat transfer co-efficient for cooling of hydrocarbons by water is about

50 -100 Kcal/hr.m².°C
50 -100 BTU/hr. ft.2°F
1000 - 1500 BTU/hr. ft.2°F
50 -100 W/m² . °K

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Heat Transfer
__________ equation relates the thermal conductivity of a solid to its temperature.

Lee's
Kopp's
Antonie
Kistyakowski

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Heat Transfer
Which of the following is unimportant in forced convection ?

Reynolds number
Grashhoff number
Prandtl number
none of the listed here

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Heat Transfer
The Stefan-Boltzman constant depends on the

None of these
Temperature
Surface
Medium

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