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Process Equipment and Plant Design

Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.5 to 0.6 d
0.02 to 0.05 d
0.08 to 0.12 d
0.2 to 0.5 d

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

(4p² - πd²/4)/πd
(p² - πd²/4)/πd
4(0.86p² - πd²)/πd
4(0.86p² - πd²/4)/πd

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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
Damaging
Working
None of these

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Process Equipment and Plant Design
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.

80
60
45
95

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Process Equipment and Plant Design
Which of the following types of reactors is the safest from operation point of view?

Pot type reactor
A vapor phase reactor
A liquid phase catalytic reactor
A liquid phase reactor

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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.

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

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