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 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
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
Fourier's law of heat conduction is valid for
A One dimensional cases only
B Two dimensional cases only
C Three dimensional cases only
D Regular surfaces having non-uniform temperature gradients
Fourier's law applies to the heat transfer by
A Convection
B Radiation
C Conduction
D All of the above
__________ chart is known as transient heat conduction chart.
A Dirhing's
B Heisler's
C Mollier's
D Cox
For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.
A Extremely low
B Low
C High
D No
How are the efficiencies of any heat engine (miu) and reversible heat engine (miuR) compared, when both are operating between same heat source and same heat sink?
A miu = miuR
B miu>miuR
C miu
D none of these
The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
A scaling factor
B forming factor
C resisting factor
D fouling factor

Next steps