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Process Equipment and Plant Design

Process Equipment and Plant Design
Welded joint efficiency in the design of chemical process equipment is taken as

0.95
0.85
0.75
0.55

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Process Equipment and Plant Design
Removable connection of tubes to tube sheet is called

Nipple
Ferrule
Saddle
Socket

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Process Equipment and Plant Design
A cylinderical pressure vessel of volume 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to

10 mm
8 mm
5 mm
6 mm

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Process Equipment and Plant Design
If 'D' is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of

None of these
D/5 or minimum 2" to 5D
D/5 or minimum 2" to D
D/2 or minimum 2" to 5D

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

Ellipsoidal
Hemispherical
Conical
Dished

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 16/NRe
f = 0.04/NRe0.16
f = 0.22 NRe0.05
f = 25/NRe

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