51. For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to
52. When a fluid flows over a solid surface, the
53. Which of the following can be used for the direct measurement of volumetric flow rate of slurry?
54. In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is
55. Minimum porosity for fluidisation is
56. For turbulent flow of newtonion fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is
57. Efficiency of power transmission (η) through a circular pipe is given by $$\frac{{{{\text{h}}_{\text{t}}} - {{\text{h}}_{\text{f}}}}}{{{{\text{h}}_{\text{t}}}}},$$ which has a maximum value of __________ percent.
58. A centrifugal pump has the following specifications:
Power = 4 H.P.; Speed = 800 rpm
Head = 8 metres
Flow = 1000 litres/minutes.
If its speed is halved, the power consumed now will be __________ hp.
Power = 4 H.P.; Speed = 800 rpm
Head = 8 metres
Flow = 1000 litres/minutes.
If its speed is halved, the power consumed now will be __________ hp.
59. Pick out the wrong statement pertaining to fluid flow.
60. The discharge co-efficient for an orificemeter does not depend upon the
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