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Process Equipment and Plant Design

Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

-q/(1-q)
None of these
-q/(q-1)
-q

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Process Equipment and Plant Design
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

2 d
D
0.75 d
0.5 d

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

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

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Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

Hold baffle in space
None of these
Fix the tubes in position
Account for thermal strain

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Decrease by 22
None of these
Increase by 21.6
Increase by 1.8

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Process Equipment and Plant Design
Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

0.1 to 0.25
0.5 to 0.6
0.65 to 0.80
0.3 to 0.5

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