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Process Equipment and Plant Design

Process Equipment and Plant Design
Maximum plate efficiency is achieved in case of __________ flow.

Split
Cascade
Reverse
Cross

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Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Decrease in gas solubility for absorbers
All of these
An increase in relatived volatility for rectification columns
An increase in liquid viscosity

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Process Equipment and Plant Design
Cooling water fouling factors vary in the range of 0.001 to 0.003

(W/m².°K)⁻¹
(BTU/hr.ft² . °F)⁻¹
(kcal/hr.m² .°C)⁻¹
(kcal/hr. m. °C)⁻¹

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Process Equipment and Plant Design
Movement of pipeline caused by thermal expansion is taken care by providing

Changes in its direction
All of these
Expansion joint
Change in the shape of pipeline

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Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

√(2πd)
D
√(2d)
√d

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Process Equipment and Plant Design
Speed of the drum of the rotary vacuum filter normally ranges from __________ rpm.

0.1 to 2
8 to 15
3 to 8
5 to 7

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