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Process Equipment and Plant Design

Process Equipment and Plant Design
The units of Young's modulus of elasticity and __________ are the same.

None of these
Stress
Modular ratio
Strain

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

100-150
43835
20-40
1000-1500

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Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

750
650
250
450

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Running cost of cooling water for condenser
Fixed charges initially
Vapour & liquid load both
Running cost of steam for reboiler

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Process Equipment and Plant Design
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.

80
95
45
60

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

10-20
1-5
80-100
0.1-0.5

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