True one-dimensional flow occurs when_________________?

A. The direction and magnitude of the veiocity at all points are identical
B. The velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
C. The magnitude and direction of the velocity do not change from point to point in the fluid
D. The fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

In an immersed body, centre of pressure is __________________?

A. At the centre of gravity
B. Above the centre of gravity
C. Below be centre of gravity
D. Could be above or below e.g. depend¬ing on density of body and liquid

Gradually varied flow is__________________?

A. Steady uniform
B. Non-steady non-uniform
C. Non-steady uniform
D. Steady non-uniform

Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be_______________?

A. 1000 kg
B. 4000 kg
C. 2000 kg
D. 8000 kg

Rotameter is a device used to measure______________?

A. Absolute pressure
B. Velocity of fluid
C. Flow
D. Rotation

During the opening of a valve in a pipe line, the flow is_________________?

A. Steady
B. Unsteady
C. Uniform
D. Laminar

In the case of steady flow of a fluid, the acceleration of any fluid particle is________________?

A. Constant
B. Variable
C. Zero
D. Zero under limiting conditions

The flow which neglects changes in a transverse direction is known as_________________?

A. One dimensional flow
B. Uniform flow
C. Steady flow
D. Turbulent flow

The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as__________________?

A. One dimensional flow
B. Uniform flow
C. Steady flow
D. Turbulent flow

The flow in which conditions do not change with time at any point, is known as_________________?

A. One dimensional flow
B. Uniform flow
C. Steady flow
D. Turbulent flow