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Process Equipment and Plant Design

Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

52-68
17-34
43929
88-105

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Process Equipment and Plant Design
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.

Allowable
Working
Damaging
None of these

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Process Equipment and Plant Design
LMTD correction factor is used in heat exchanger design for

Double pipe heat exchanger
Multipass shell and tube heat exchanger
Fouling fluids
Counter flow of hot and cold fluids

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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.

43835
1000-1500
20-40
100-150

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Process Equipment and Plant Design
__________ is the determining factor for the number of bubble caps to be used per tray.

Liquid load
Tray diameter
Permissible slot velocity
Vapor load

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Process Equipment and Plant Design
A rivetted joint does not fail by __________ of rivets.

Shearing
Tearing of the plate across a row
Tearing
None of these

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