In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are…
The eddy viscosity for turbulent flow is______________? A. a function of temperature only B. a physical property of the fluid.C. dependent on the flow D. independent of the flow
The horizontal component of force on a curved surface is equal to the_______________? A. product of pressure intensity at its centroid and areaB. force on a vertical projection of the curved surface C. weight of liquid vertically above the curved…
An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to_______________? A. g/3 B. g/2 C. 2g/3D.…
If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________? A. the pressure throughout the liquid mass is atmospheric B. there will be vacuum in the liquid C. the pressure in the liquid mass is…
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________? A. 5kNB. lOkN C. 15…
Metacentric height for small values of angle of heel is the distance between the________________? A. centre of gravity and centre of buoy-ancyB. centre of gravity and metacentre C. centre of buoyancy and metacentre D. free surface and centre of buoyancy
Centre of buoyancy always_________________? A. coincides with the centre of gravityB. coincides with the centroid of the volume of fluid displaced C. remains above the centre of gravity D. remains below the centre of gravity
The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to_______________? A. PA B. pA sin 9 C. pA cos 9 D. pA tan 9 where p is pressure intensity at centroid of…
An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be________________? A. 4 kN/m2 B. 10 kN/m2 C. 12 kN/m2D.…