Question

A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is

a.

26

b.

42

c.

269

d.

325

Answer: (c).269

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used...

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m³ ) is to be fluidised by water (density 1000 kg/m³ ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is

Q. Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

Q. Volume of liquid displaced by a floating body is equivalent to its

Q. The __________ is measured by a piezometric opening.

Q. What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir ?

Q. Steady uniform flow is represented by flow through a/an

Q. Pick out the correct statement pertaining to the flow through a converging-diverging tube.

Q. Cavitation can be prevented by

Q. Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will

Q. Steady flow occurs, when the

Q. With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost

Q. Pick out the wrong statement:

Q. Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.

Q. In a fully turbulent flow (Re > 10⁵) in a pipe of diameter 'd', for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is

Q. Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump.

Q. Small pressure differences in liquids is measured using a/an

Q. Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an

Q. The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its

Q. The exit cone angle in case of a standard venturimeter is __________ the entrance cone angle.

Q. Sewage sludge is __________ type of non-Newtonion fluid.

Recommended Subjects

Are you eager to expand your knowledge beyond Basic Chemical Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!