A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of__________________?

Related Mcqs:

Maximum heat transfer rate is obtained in ______________ flow?

A. Laminar B. Turbulent C. Creeping D. Transition region...

It is not preferable to use superheated steam in evaporators, because of its very_________________?

A. High temperature B. High pressure C. Low film co-efficient D. None of these...

In SI units, thermal conductivity is expressed in__________________?

A. Watt/m.°K B. Watt/m2. °K C. Watt/m2. °K D. Watt/m4. °K...

Steam economy in case of a triple effect evaporator will be _________________?

A. 1 B. < 1 C. > 1 D. Between 0 and 1...

Kirchoff’s law is applicable to________________?

A. Monochromatic radiation only B. Total radiation only C. Both A. and B. D. Only volumes and not to surfaces...