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Process Equipment and Plant Design

Process Equipment and Plant Design
Safety valves are provided in chemical equipments to guard against excessive

Temperature
Pressure/pressure fluctuation
Turbulence
Noise

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

0.85
1
1.2
< 0.5

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Process Equipment and Plant Design
For given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be __________ times.

Considerably less than 9
About 9
About 3
Considerably more than 9

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Process Equipment and Plant Design
The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

pd/t
pd/2t
pd/4t
pd/8t

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

Three fourth
Half
One fourth
Equal to

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Process Equipment and Plant Design
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

1
Equal to the order of reaction
< 1
>1

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