At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally ?

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In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by________________?

A. 4(0.86P2 – πd2/4)/πd B. (P2 – πd2/4)/πd C. 4(0.86P2 – πd2)/πd D. (4P2 + πd2/4)/πd...

Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is ___________________?

A. More B. Less C. Same D. Either A. or B.; depends upon the I.D. of the pipe...

_______________ shaped roof is most commonly used for cylindrical tanks ?

A. Cone B. Dome C. Umbrella D. Flat...

What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?

A. 6.5 cms B. 6.5 mm C. Equal to tube I.D D. Equal to tube O.D...

Which of the following efficiencies can be greater than 100% ?

A. Overall plate efficiency B. Murphree plate efficiency C. Point efficiency D. None of these...