Hydraulics and Fluid Mechanics

A. specific gravity = gravity x density
B. dynamicviscosity = kinematicviscosity x density
C. gravity = specific gravity x density
D. kinematicviscosity = dynamicviscosity x density
E. hydrostaticforce = surface tension x gravity.

A. energy/unit area
B. distance
C. both of the above
D. it has no units
E. none of the above

A. 400 kg/cm2
B. 4000 kg/cm2
C. 40 x 105 kg/cm2
D. 40 x 106 kg/cm2
E. none of the above

A. acts in the plane of the interface normal to any line in the surface
B. is also known as capillarity
C. is a function of the curvature of the interface
D. decreases with fall in temperature
E. has no units

A. 1000
B. 2100
C. 2700
D. 10,000
E. 21,000.

A. has the dimensions of 1/pressure
B. increases with pressure
C. is large when fluid is more compressible
D. is independent of pressure and viscosity
E. is directly proportional to flow.

A. higher
B. lower
C. same
D. higher/lower depending on temperature
E. unpredictable.

A. remains same
B. increases
C. decreases
D. shows erratic behaviour
E. none of the above.

A. more
B. less
C. same
D. more or less depending on size of glass tube
E. none of the above.

A. 10m/sec2
B. 9.81 m/sec2
C. 10.2/m sec
D. 9.75 m/sec2
E. 9 m/sec .