Fluid Mechanics Sheet 30
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1) Question.
There are four variables, namely, E (volume modulus of elasticity), p (pressure per unit area), g (acceleration due to gravity) and (viscosity of water). They are associated with Mach, Euler, Froude and Reynolds numbers, respectively, in the order
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2) Question.
In an open channel of wide rectangular section with constant n value, the bed slope is , the local friction slope at a section is , the local Froude number of the flow is 0.8. The local rate of variation of depth with longitudinal distance along the flow direction is
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3) Question.
Water enters a turbine steadily at the rate of 100 litres per second with a pressure of and a velocity of 100 m/s. It leaves the turbine with a pressure of and a velocity of 50 m/sec. If no losses occur, the power produced by the turbine is
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4) Question.
Given that g= acceleration due to gravity and R= hydraulic mean depth, the Darcy-Weisbach friction factor is related to Manning's rugosity coefficient 'n' as
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5) Question.
Which of the following conditions will be satisfied by steady irrotational flow ?
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Answer.