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

The value of fouling factor depends upon the

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

A/an __________ is used for changing the direction of a pipeline.

The stress developed in a material without any permanent set is called the

In a shell and tube heat exchanger, the 'tube pitch' is defined as the

For laminar flow (N_Re <in steel pipe, the optimum inside pipe diameter is given by

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

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.

In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.

Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

Lug support is

The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

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

Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method ?

Pick out the correct statement.

Lug support is

A rivetted joint does not fail by __________ of rivets.

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

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

Pick out the wrong statement pertaining to the use of valve tray, seive tray and bubble cap trays in continuous distillation column.

__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Pick out the wrong statement

A/an __________ is used for changing the direction of a pipeline.

Speed of the drum of the rotary vacuum filter normally ranges from __________ rpm.

A stuffing box is used for

Wall thickness of schedulepipe as compared to that of schedulepipe is

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

Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

The operating velocity in the absorption tower is usually 40-of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

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

With increase in the number of shell passes, the value of F_T

What is the value of 'q' for saturated liquid feed to a distillation column ?

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.

Pick out the wrong statement pertaining to the design of a basket type evaporator.

Bracket supports are the most suitable for supporting __________ vessels.

Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

In perforated plate towers, the

Pick out the wrong statement.
In an agitated vertical cylinderical reaction vessel, the

The main purpose of providing stepping on the trays is to

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

The operating pressure drop range in a bag filter is about __________ mm water gauge.

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

Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.- 1.4 cp and relative volatility <(where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi)

Floating head heat exchangers are used for the

Pick out the wrong statement.
In an agitated vertical cylinderical reaction vessel, the

The ratio of shear stress to shear strain is called

Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

Speed of industrial paddle agitator ranges from __________ rpm.