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Process Equipment and Plant Design

Process Equipment and Plant Design
Rivets are generally specified by the

Shank diameter
None of these
Head diameter
Overall length

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Process Equipment and Plant Design
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

(1.2)5/3
(1.2)3/2
(1.2)3/5
(1.2)2/3

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Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Increases economy
Both B & C
Increases capacity
Does not affect the capacity

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Process Equipment and Plant Design
Speed of industrial paddle agitator ranges from __________ rpm.

500 to 750
20 to 100
1000 to 2000
1 to 5

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Process Equipment and Plant Design
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube?

Short tube vertical evaporator
Long tube vertical evaporator
Horizontal tube evaporator
None of these

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

44119
7.5-10.0
3.5-5.5
1.5-2.5

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