Hydraulics And Fluid Mechanics Set 1

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This set of Hydraulics and Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Hydraulics And Fluid Mechanics Set 1

Q1 | When a body is placed over a liquid, it will sink down if
Q2 | The property by virtue of which a liquid opposes relative motion between its different layers iscalled
Q3 | A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ halfthe height of water above the weir crest.
Q4 | Euler's dimensionless number relates the following
Q5 | When a body floating in a liquid, is displaced slightly, it oscillates about
Q6 | When the Mach number is between __________ the flow is called super-sonic flow.
Q7 | In an immersed body, centre of pressure is
Q8 | Steady flow occurs when
Q9 | A flow is called super-sonic if the
Q10 | In a forced vortex, the velocity of flow everywhere within the fluid is
Q11 | Mach number is significant in
Q12 | In order that flow takes place between two points in a pipeline, the differential pressure betweenthese points must be more than
Q13 | The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by
Q14 | For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal
Q15 | The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.
Q16 | If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be
Q17 | The ratio of the inertia force to the __________ is called Euler's number.
Q18 | A one dimensional flow is one which
Q19 | According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)
Q20 | An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called
Q21 | The property of fluid by virtue of which it offers resistance to shear is called
Q22 | Coefficient of velocity is defined as the ratio of
Q23 | The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is
Q24 | A fluid in equilibrium can't sustain
Q25 | When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.