The film co-efficient between condensing vapour and metal wall increas – McqOptions

MCQOPTIONS

1.	The film co-efficient between condensing vapour and metal wall increases with%!
A.	Increasing temperature of the vapour
B.	Decreasing temperature of the vapour
C.	Increasing viscosity of the film of condensate
D.	Increasing temperature drop
Answer» B. Decreasing temperature of the vapour

Discussion

No Comment Found

Related MCQs

The Graetz number is concerned with the
Low thermal conductivity of heat insulating materials is due to its%!
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s‚Äö√Ö¬™¬¨œÄ is to be heated. Steam condensate at 95¬¨‚àûC is available for heating purpose, also at a rate of 10 Kg.s‚Äö√Ö¬™¬¨œÄ. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is%!
1 BTU/hr.ft.¬¨‚àûF is equal to __________ kcal/hr. m.¬¨‚àûC.%!
Value of Prandtl number for water ranges from%!
Terminal point temperature differences between fluids in case of a heat exchanger is termed as
Heat exchangers operating, when the asymptotic range is reached,%!
Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?%!
The most conducive surface for dropwise condensation to occur is the __________ surface.%!
Absorptivity and refletivity of a perfect black body are respectively%!