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_______________?

Related Mcqs:

1. A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is___________________?

   A. zero
   B. one-fourth its value when cylinder was full
   C. one-half its value when cylinder was full
   D. cannot be predicted from the given data

2. A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then________________?

   1. the ball will move to the front
   2. the bubble will move to the front
   3. the ball will move to the rear
   4. the bubble will move to the rear
   Find out which of the above statements are correct ?

   A. (1) and (2)
   B. (1)and(4)
   C. (2) and (3)
   D. (3) and (4)

3. 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/m2
   D. 14 kN/m2

4. 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 greater than hydrostatic pressure
   D. none of the above

5. If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is_______________?

   A. 1
   B. 4/3
   C. 2
   D. 4

6. 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 area and A is area of plane surface

7. The major loss of energy in long pipes is due to_______________?

   A. sudden enlargement
   B. sudden contraction
   C. gradual contraction or enlargement
   D. friction

8. 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. 5kN
   B. lOkN
   C. 15 kN
   D. 20 kN

9. The horizontal component of force on a curved surface is equal to the_______________?

   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

10. For laminar flow in circular pipes, the Darcy’s friction factor f is equal to_________________?

    A. 16/Re
    B. 32/ Re
    C. 64/ Re
    D. none of the above where R,, is Reynolds number