Civil Engineering MCQs

2965 MCQs  (Page 246 of 297)

Uniform flow occurs when____________________?
A. The flow is steady
B. The flow is streamline
C. Size and shape of the cross section in a particular length remain constant
D. Size and cross section change uniform¬ly along length
Steady flow occurs when____________________?
A. The direction and magnitude of the velocity 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
Rotameter is a device used to measure____________________?
A. Absolute pressure
B. Velocity of fluid
C. Flow
D. Rotation
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
Gradually varied flow is____________________?
A. Steady uniform
B. Non-steady non-uniform
C. Non-steady uniform
D. Steady non-uniform