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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).

Dished
Conical
Hemispherical
Ellipsoidal

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Process Equipment and Plant Design
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?

None of these
McCabe-Thiele's method
Ponchon-Savarit method
Sorel-Lewis method

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

1.5 times
Three fourth
Equal to
Half

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Process Equipment and Plant Design
The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

Equal to
Twice
0.6-0.8 times
2 ft irrespective of (for column > 3 ft diameter)

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Process Equipment and Plant Design
Which of the following lengths of heat exchanger tubes are normally not used in practice?

6 metres
0.5 metre
2.5 metres
10 metres

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/3t
pd/t
pd/4t
pd/2t

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