Fluid Mechanics for Chemical — Test 22
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Question 1
Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation ?
Question 2
Cd is always ______________ Cc?
Question 3
A gas (density = 1.5 kg/m3, viscosity = 2 × 10‒5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5 kg/m3and viscosity of 3 × 10‒5kg/m.s flowing at 3 m/s will be________________?
Question 4
Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively_______________?
Question 5
If in a flow field, between any two points, then the flow must be___________________?
Question 6
Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?
Question 7
Working of a _______________ pump characterises mixed flow?
Question 8
Drag co-efficient in hindered settling is _____________ that in free settling?
Question 9
In case of Venturimeter, friction losses are about _____________ percent of maximum velocity head?
Question 10
The maximum head that can be developed by a single impeller is _____________ ft?