Category: Fluid Mechanics

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)

A. less than d
B. between d and 1.5 d
C. between 1.5 d and 2d
D. greater than 2d

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

A. pressure
B. kinematic viscosity
C. dynamic viscosity
D. surface tension

A. pipe diameter
B. throat diameter
C. angle of diverging section
D. both pipe diameter as well as throat diameter

A. a function of temperature only
B. a physical property of the fluid.
C. dependent on the flow
D. independent of the flow

A. 0.223 R
B. 0.423 R
C. 0.577 R
D. 0.707 R

where R is radius of pipe

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

A. intensity of pressure and rate of angular deformation
B. shear stress and rate of angular deformation
C. shear stress, viscosity and temperature
D. viscosity and rate of angular deformation

A. can be zero
B. is never zero
C. is always zero
D. is independent of coordinates