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.Management Sciences
Category: Process Equipment and Plant Design
The force due to wind load acting on a tall vessel depends upon its___________________?
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A. Shape
B. Outside diameter
C. Height
D. All A, B. & C.
The diameter of a propeller agitator used in agitation tank ranges from ____________ percent of the tank diameter and its peripheral speed is normally 300 to 500 metres/minute ?
A. 5 to 10
B. 15 to 30
C. 40 to 50
D. 55 to 75
The dust collection efficiency of electrostatic precipitator increases with increase in the_________________?
A. Gas flow rate
B. Electrode area
C. Both A. & B.
D. Neither A. nor B.
Which of the following lengths of heat exchanger tubes are normally not used in practice ?
A. 2.5 metres
B. 6 metres
C. 10 metres
D. 0.5 metre
Needle valves are generally not used for___________________?
A. Very large diameter pipes
B. High pressure throttling service
C. Very accurate flow control
D. Smaller sizes of pipe
In shell and tube heat exchangers, straight tie rods are used to_________________?
A. Hold baffle in space
B. Fix the tubes in position
C. Account for thermal strain
D. None of these
Wind load consideration in the design of a support can be neglected, when the vessel is___________________?
A. Tall (say 30 metres), but is full of liquid
B. Tall but empty
C. Short (< 2 m) and housed indoor
D. None of these
Nominal size of a pipe is an indication of its _______________ diameter?
A. Inner
B. Outer
C. Approximate
D. None of these
With increase in gas flow rate to fabric surface area ratio (Nm3/hr/m2 fabric surface area), the size & the cost of a bag filter___________________?
A. Increases
B. Decreases
C. Remain unaffected
D. None of these
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