Hydraulics and Fluid Mechanics

A. ratio of inertial force to force due to viscosity
B. ratio of inertial force to force due to gravitation
C. ratio of inertial force to force due to surface tension
D. all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

A. specific gravity of liquids
B. specific gravity of solids
C. specific gravity of gases
D. relative humidity
E. density

A. the direction and magnitude of the velocity at all points are identical
B. the velocity of successive fluid pai-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 plsr.e
E. velocity, depth, pressure, etc. change from point to point in the fluid flow

A. crest
B. nappe
C. sill
D. weir top
E. contracta

A. wake
B. drag
C. lift
D. boundary layer
E. aerofoil section

A. 0.83
B. 0.6
C. 0.4
D. 0.3
E. none of the above

A. maximum
B. minimum
C. zero
D. non-zero and finite
E. unpredictable

A. head of water (h)
B. h2
C. V/T
D. h2
E. h3/1.

A. 0.5
B. 0.4
C. 0.515
D. 0.5
E. none of the above

A. parallel to central axis flow
B. parallel to outer surface of pipe
C. of equal yelocity in a flow
D. along which the pressure drop is uniform
E. which occurs in all flows