Heat Transfer Questions

Q.  In gases, the transfer of heat takes place by

a. volumetric density
b. transporting energy with free electrons
c. unstable elastic collision
d. random molecular collision


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  How is the wavelength of radiation (λ) calculated, when propagation velocity (C) and frequency (ν) of the radiation is given?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  What is the approximate wavelength range of thermal radiation?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The wavelength range of the visible light is about
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which of the following bodies will not be able to emit radiation continuously?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  When a body receives radiation in the wavelength range of 0.1 to 100 μm (micrometer), then its temperature
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  What is emissive power of a body?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which of the following is NOT a type of condensation heat transfer process?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which surface does the drop-wise condensation occur on?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  How can the rates of heat transfer from drop-wise condensation and film condensation be compared?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Film condensation occurs on a surface when
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The thermal resistance for heat transfer is low in
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The conduction heat transfer with combination of transfer of material also is called as
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
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: T-Code Scripts
MCQs:  What is the temperature gradient in the conduction heat transfer?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
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: T-Code Scripts
MCQs:  The value of thermal conductivity k depends upon
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The materials which have low thermal conductivity are called as ____________
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  How does the radiation heat transfer occur through perfect vacuum?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The Stefan-Boltzmann law of thermal radiation is applicable for
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
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: T-Code Scripts