A perfect black body is a perfect _____________ of radiation?

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Evaporator tubes are generally_____________________?

A. Horizontal B. Vertical C. Inclined D. Random...

Pick out the wrong statement?

A. Bubble size increases with the dynamic viscosity of the liquid in case of nucleate pool boiling B. Thermal conductivity of a dry material is more than that of the damp material C. Ratio of its capacity to economy equals the steam consumption in kg/hr in an evaporator D. Vaporisation of organic substances in evaporator … Pick out the wrong statement?Read More...

Which of the following has the lowest overall heat transfer co-efficient ?

A. Dowtherm B. Molten sodium C. Water D. Air...

Terminal point temperature differences between fluids in case of a heat exchanger is termed as__________________?

A. Approach B. Log mean temperature difference C. Arithmetic mean temperature difference D. Geometric mean temperature difference...

The purpose of providing expansion bellows in the shell of tubular exchanger is to _____________________?

A. Increase the heating load B. Impart structural strength C. Account for the uneven expansion of shell and tube bundles D. Facilitate increase of shell length, if needed...