Tubes are held between top and bottom tube sheets in Calandria type evaporator by keeping_________________?

Related Mcqs:

Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the_________________?

A. Existence of thermal boundary layer B. Temperature gradient produced due to density difference C. Buoyancy of the bubbles produced at active nucleation site D. None of these...

The thermal boundary layer at NPr > 1 ?

A. Is thicker than hydrodynamic boundary layer B. Is thinner than hydrodynamic boundary layer C. And the hydrodynamic boundary layers are identical D. Disappears...

If heat transfer rate varies with the time, it is termed as__________________?

A. Forced convection B. Steady state conduction C. Monochromatic radiation D. None of these...

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...

Pick out the correct statement ?

A. Higher is the temperature of the radiating body, higher is the wavelength of radiation B. Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder C. The wavelength corresponding to maximum mono-chromatic emissive power increases with rise in temperature D. Solid angle subtended by the finite surface at … Pick out the correct statement ?Read More...