The ratio of kinematic viscosity to thermal diffusivity is called the _______________ number? A. PecletB. Prandtl C. Stanton D. Nusselt

Vibrations in the tubes of a shell and tube heat exchanger is induced due to the _________________? A. Flow of fluid on the tube and shell sides B. Oscillations in the flow of shell/tube sides fluid C. Vibrations transmitted through…

What is the steam economy in case of a single effect evaporator system ? A. 1 B. > 1C. < 1 D. 0.1

For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus- Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of________________?…

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 bankC. Increase the shell side heat transfer co-efficient D.…

____________ chart is known as transient heat conduction chart? A. Dirhing’s B. Heisler’s C. Mollier’s D. Cox

Controlling heat transfer film co-efficient is the one, which offers ______________ resistance to heat transfer? A. No B. The leastC. The largest D. Lower

Which of the following is concerned with both heat and mass transfer ? A. Lewis relationship B. Nusselt number C. Kutateladze number D. Froude number

Duhring‟s rule is important in solving problems on__________________? A. Distillation B. CrystallisationC. Evaporation D. Humidification

Heat transfer by radiation between two bodies at T1 & T2 and in an ambient temperature of Ta°C depends on_____________? A. T1 – T2 B. T1 – Ta C. T2 – TaD. None of these