Q. To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

View solution

Q. In a heat exchanger, shell side fluid velocity can be changed by changing the tube

View solution

Q. Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure ?

View solution

Q. It is not desirable to design a heat exchanger for LMTD correction factor, Fᴛ, of less than

View solution

Q. A rivetted joint does not fail by __________ of rivets.

View solution

Q. Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger

View solution

Q. Bracket supports are the most suitable for supporting __________ vessels.

View solution

Q. Fresh water carrying pipelines in chemical industries are coloured with __________ color.

View solution

Q. Which of the following material is seldom used for pressure vessel construction ?

View solution

Q. The ratio of shear stress to shear strain is called

View solution

Q. 25 per cent cut segmental baffle means that the baffle

View solution

Q. Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.

View solution

Q. In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon

View solution

Q. Two iron pipes of the same nominal diameter but different schedule numbers will have the same

View solution

Q. Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

View solution

Q. Pick out the wrong statement

View solution

Q. Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

View solution

Q. In chemical process equipments, the conical bottom heads used, usually has an apex angle of

View solution

Q. Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.

View solution

Q. Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is

View solution