Heat Transfer Questions


Q.  When the surface of a body is at higher temperature than the surrounding fluid, then the heat flows firstly from surface of the body to the adjacent layer of fluid by

a. convection
b. conduction
c. radiation
d. none of the above


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  According to the Fourier's law of heat conduction, the rate of heat transfer by conduction depends upon
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  What is the temperature gradient in the conduction heat transfer?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  Why is the negative sign introduced in the equation of Fourier's law of heat conduction? q = – kA (dT / dx)
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  The value of thermal conductivity k depends upon
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  The materials which have low thermal conductivity are called as ____________
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  How does the radiation heat transfer occur through perfect vacuum?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  The Stefan-Boltzmann law of thermal radiation is applicable for
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  According to the Stefan-Boltzmann law of thermal radiation for a perfect radiator, the rate of radiant energy per unit area is proportional to
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  Which of the following fluid can be considered as an ideal fluid?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  The viscosity of a liquid
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  How is the viscosity of gas affected by change in its temperature?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  What is kinematics viscosity of a fluid?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  The heat transfer is largely governed by conduction from the surface of the fluid, when
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  Generally, thermal conductivity of liquids is
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  The emissive power of a body depends upon
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  At a given temperature if wavelengths are changed, the quality of radiation per unit wavelength
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  What is the relation between temperature of a body and the wavelength of its emitted radiation at its maximum emissive power?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  Which of the following relation is correct for the radiation?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  What is the relation between reflectivity (ρ), absorptivity (α) and transmissivity (τ)?
Category: Mechanical Engineering Questions,   Published by: teswesm
MCQs:  What is the opaque body?
Category: Mechanical Engineering Questions,   Published by: teswesm