Prandtl and Reynolds analogy are same, when Prandtl number is____________________?
Prandtl and Reynolds analogy are same, when Prandtl number is____________________?
A. 0.5
B. 1
C. > 2
D. 1.5
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Heat transfer by ____________ may not necessarily require the presence of a medium?
Heat transfer by ____________ may not necessarily require the presence of a medium?A. Conduction
B. Natural convection
C. Forced convection
D. RadiationTemperature profile in steady state heat transfer is________________?
Temperature profile in steady state heat transfer is________________?A. Asymptotic
B. Hyperbolic
C. Parabolic
D. LinearBaffles in the shell side of a shell and tube heat exchanger ?
Baffles in the shell side of a shell and tube heat exchanger ?A. Increase the cross-section of the shell side liquid
B. Force the liquid to flow parallel to the bank
C. Increase the shell side heat transfer co-efficient
D. Decrease the shell side heat transfer co-efficientCondensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2.°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the_________________?
Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2.°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the_________________?A. Higher condensing film co-efficient is desired
B. Condensate is corrosive in nature
C. Lower pressure drop through the exchanger is desired
D. Temperature of the incoming vapor is very highFilm condensation is promoted on a/an _______________________ surface?
Film condensation is promoted on a/an _______________________ surface?A. Oily
B. Coated
C. Clean & smooth
D. DirtyThe critical radius ‘r’ of insulation on a pipe is given by____________________?
The critical radius ‘r’ of insulation on a pipe is given by____________________?A. r = 2k/h
B. r = k/h
C. r = k/2h
D. r = h/k