Chemical Engineering · all questions

Heat Transfer
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

517

Questions

26/26

Page

Pick an option on a question to see the right answer and solution.

Q501

Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter)

Select an option to see the answer and solution.

Q502

LMTD can't be used as such without a correction factor for the

Select an option to see the answer and solution.

Q503

Economy of an evaporator is influenced by the

Select an option to see the answer and solution.

Q504

In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred

Select an option to see the answer and solution.

Q505

The advantage of backward feed multiple effect evaporators over forward feed units is that

Select an option to see the answer and solution.

Q506

The ratio of momentum diffusivity to thermal diffusivity is the __________ number.

Select an option to see the answer and solution.

Q507

The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is

Select an option to see the answer and solution.

Q508

Water always boils when its

Select an option to see the answer and solution.

Q509

Which one gives the monochromatic emissive power for black body radiation?

Select an option to see the answer and solution.

Q510

If heat transfer rate varies with the time, it is termed as

Select an option to see the answer and solution.

Q511

Vibrations in the tubes of a shell and tube heat exchanger is induced due to the

Select an option to see the answer and solution.

Q512

Radiation heat losses from satisfactorily insulated high pressure boilar may be about __________ percent.

Select an option to see the answer and solution.

Q513

Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids?

Select an option to see the answer and solution.

Q514

Which of the following situations can be approximated to a steady state heat transfer system?

Select an option to see the answer and solution.

Q515

While the total emissivity of a perfect black body is unity, the same for a real body is

Select an option to see the answer and solution.

Q516

Pick out the wrong statement:

Select an option to see the answer and solution.

Q517

The Graetz number is concerned with the

Select an option to see the answer and solution.