Related Questions

Fourier's law of heat conduction gives the heat flow for
A Irregular surfaces
B Nonuniform temperature surfaces
C One dimensional cases only
D Two dimensional cases only
In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is
A Linear
B Hyperbolic
C Parabolic
D None of these
Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is
A [

A. Thin walled having the value of Ao Ai/

B. Thick walled

B Having the value of Ao/Ai > 2
C Both B and C
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 tempeature follows __________ law.
A Parabolic
B Hyperbolic
C Linear
D Logarithmic
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.
A Hyperbolic
B Parabolic
C Linear
D Logarithmic
In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate.
A Geometric
B Arithmetic
C Logarithmic
D Either A, B or C
The amount of heat flow through a body by conduction is
A Directly proportional to the surface area of the body
B Directly proportional to the temperature difference on the two faces of the body
C Dependent upon the material of the body
D All of the above
Which area is used in case of heat flow by conduction through a cylinder?
A Logarithmic mean area
B Arithmetic mean area
C Geometric mean area
D None of these
In one dimensional flow, the flow
A Is steady and uniform
B Takes place in straight line
C Takes place in curve
D Takes place in one direction
In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
A Low
B Very low
C High
D Very high

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