Air is best heated with steam in a heat exchanger of__________________?

Related Mcqs:

In a forward feed multiple effect evaporator, the pressure is ____________________?

A. Highest in last effect B. Lowest in last effect C. Same in all effects D. Dependent on the number of effects...

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....

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

A. Abundance & high heat capacity B. Low density C. Low viscosity D. High fluidity...

Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place____________________?

A. Between two bodies in physical contact with each other B. Between two bodies not in physical contact with each other C. From one part of a body to the another part of the same body D. Both B & C...

Pick out the wrong statement ?

A. With change in temperature, the radiant energy emitted by a black body remains unchanged B. Absorptivity of a body approaches unity in case of diffuse reflection C. Absorptivity of a perfectly black body is unity D. Value of Stefan-Boltzmann constant is 4.876 × 10-8 KCal/m2.hr.°K4...