A. 4 kN/m2
B. 10 kN/m2
C. 12 kN/m2
D. 14 kN/m2
0
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The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to_______________?
0
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Centre of buoyancy always_________________?
A. PA
B. pA sin 9
C. pA cos 9
D. pA tan 9
where p is pressure intensity at centroid of area and A is area of plane surface
0
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Metacentric height for small values of angle of heel is the distance between the________________?
A. coincides with the centre of gravity
B. coincides with the centroid of the volume of fluid displaced
C. remains above the centre of gravity
D. remains below the centre of gravity
0
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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. centre of gravity and centre of buoy-ancy
B. centre of gravity and metacentre
C. centre of buoyancy and metacentre
D. free surface and centre of buoyancy
0
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If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________?
A. 5kN
B. lOkN
C. 15 kN
D. 20 kN
0
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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. the pressure throughout the liquid mass is atmospheric
B. there will be vacuum in the liquid
C. the pressure in the liquid mass is greater than hydrostatic pressure
D. none of the above
0
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The horizontal component of force on a curved surface is equal to the_______________?
A. g/3
B. g/2
C. 2g/3
D. g
0
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The eddy viscosity for turbulent flow is______________?
A. product of pressure intensity at its centroid and area
B. force on a vertical projection of the curved surface
C. weight of liquid vertically above the curved surface
D. force on the horizontal projection of the curved surface
0
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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 1.5 cm apart, is_________________?
A. a function of temperature only
B. a physical property of the fluid.
C. dependent on the flow
D. independent of the flow