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Process Equipment and Plant Design

Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

1
25
5
15

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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

2
20.2
None of these
20.8

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Process Equipment and Plant Design
Needle valves are generally not used for

Smaller sizes of pipe
Very large diameter pipes
High pressure throttling service
Very accurate flow control

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Process Equipment and Plant Design
The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure.

Ellipsoidal
Torispherical
Hemispherical
Flat plate

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Process Equipment and Plant Design
In a __________ rivetted joint, the number of rivets decreases from the innermost row to the outermost row.

None of these
Zig-zag
Chain
Diamond

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Process Equipment and Plant Design
Value of Peclet number = 0, is the representative of

Laminar flow
Eddy diffusivity = 0
Complete back mixing
Plug flow

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