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Process Equipment and Plant Design

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

D
√d
√(2d)
√(2πd)

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Process Equipment and Plant Design
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always

More than geometric mean value
More than arithmetic mean value
Less than arithmetic mean value
Both B & C

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Process Equipment and Plant Design
The wall thickness for a large high pressure pipeline is determined by the consideration of the

Forces exerted by static and dynamic action at bends
Circumferential pipewall tension
Temperature stresses
Axial tensile stress in the pipe

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

Turbulence
Pressure/pressure fluctuation
Temperature
Noise

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Less
About 0.33 times
About 3 times
Same

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Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

Murphree plate efficiency
Overall plate efficiency
Point efficiency
None of these

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