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Process Equipment and Plant Design

Process Equipment and Plant Design
For a 25 mm hole drilled in plates to be rivetted, the shank diameter of the rivet should be __________ mm.

27
23
25
26

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Process Equipment and Plant Design
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

20.2
20.8
None of these
2

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Process Equipment and Plant Design
In distillation columns, bubble caps are held in place over trays by

A hold down bar
Both B and C
Bolts
Rivets

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Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 1.5
0 to 2.2
0 to 0.08
0 to 0.8

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Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

Fluid rates and fluid properties
All of these
Type & size of packing
Operating pressure and column diameter

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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
5 mm
6 mm
8 mm

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