Thermal diffusivity is given by__________________?
Thermal diffusivity is given by__________________?
A. k/ρCp
B. ρCp/k
C. μCp/a
D. μ/hCp
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To reduce the tube side pressure drop for the same flow rate, the heat exchanger recommended is _______________?
To reduce the tube side pressure drop for the same flow rate, the heat exchanger recommended is _______________?A. 1-2 heat exchanger
B. 1-1 heat exchanger
C. 3-2 heat exchanger
D. 2-4 heat exchangerThe advantage of backward feed multiple effect evaporators over forward feed units is that___________________?
The advantage of backward feed multiple effect evaporators over forward feed units is that___________________?A. Heat sensitive material can be handled
B. There is no additional cost of pumg
C. Most concentrated liquid is at highest temperature
D. Equal heat transfer co-efficients exist in various effectsIn natural convection heat transfer, the correlating parameter is the_______________________?
In natural convection heat transfer, the correlating parameter is the_______________________?A. Graetz number
B. Eckert number
C. Grashoff number
D. Bond numberIf the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid_________________?
If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid_________________?A. Remains unchanged
B. Increases
C. Increases or decreases depending on number of shell passes
D. DecreasesA sphere of radius ‘R1’ is enclosed in a sphere of radius ‘R2’. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is ________________?
A sphere of radius ‘R1’ is enclosed in a sphere of radius ‘R2’. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is ________________?A. 0
B. R2/(R1+R2)
C. 1
D. (R1/R2)2The purpose of providing bleed points in the evaporator is to__________________?
The purpose of providing bleed points in the evaporator is to__________________?A. Admit the feed
B. Remove the product
C. Facilitate removal of non-condensable gases
D. Create vacuum