What whould be shape of an ideal thermometer?
A.Spherical
B.Cylindrical
C.Cubical
D.Rectangular
Category: Heat Transfer Mcqs
Thermal diffusivity is
A.A mathematical formula only
B.A physical property of the material
C.A configuration for heat conduction
D.A dimensionless parameter
E.A function of temperature
Which one of the following materials will have highest value of thermal conductivity?
A.Steel
B.Aluminium
C.Brass
D.Copper
E.Lead
Heat is transferred from an insulated pipe to the surrounding still air mainly by
A.Conduction
B.Free convection
C.Forced convection
D.Radiation
E.All above together
Heat is shown to be closely related to
A.A fluid
B.Energy
C.Momentum
D.Temperature
E.Waveform
The phenomenon of boiling the milk in an open container when milk spills over the vessel is termed as
A.Film boiling
B.Pool boiling
C.Nuclear boiling
D.Sub-cooled boiling
E.Interface evaporation
For temperature below -40?C which one of the following substance can be used as thermometric substance
A.Alcohol
B.Pentane
C.Ether
D.Any of the above
E.None of the above
The thermal conductivity of wood depends upon
A.Density
B.Moisture content
C.Temperature
D.All of the above
E.None of the above
The statement that the emissivity and absorptivity of a surface is surrounded by its own temperature are the same for both monochromatic and total radiation, is known as
A.Stefan Boltzman low
B.Kirchhoff’s law
C.D’Alembert’s rule
D.Lambert law
E.Law of emissivity
In constant volume Hydrogen gas Thermometer, a correction has to be applied, because
A.Hydrogen is impure
B.Expansion of Hydrogen is non-linear
C.Density of mercury changes
D.None of the above
