Multiple Choice
In case of a body transparent to thermal radiation
A) transmissibility = 0
B) 37,500 kg
C) absorptivity = 1
D) reflectivity = 1
E) absorptivity = reflectivity = 0
Correct Answer:

Verified
Correct Answer:
Verified
Q21: Floating heads are provided in heat exchangers
Q22: In case of liquids and gases, the
Q23: In a cooling tower which mode of
Q24: Which of the following are generally diathermanous?<br>A)Solids<br>B)Liquids<br>C)Gases<br>D)All
Q25: The radiation from flames consists of<br>A)Continuous radiation
Q27: Transmission of heat by molecular collision is<br>A)Scattering<br>B)Transmission<br>C)Radiation<br>D)Convection<br>E)Conduction
Q28: In a shell and tube heat exchanger,
Q29: A hollow sphere with uniform interior temperature
Q30: A dimensionless number which is the ratio
Q31: Which rays have the least wavelength?<br>A)Ultraviolet<br>B)Cosmic rays<br>C)Irifrared<br>D)X-rays<br>E)Radio