Search
.Management Sciences
Category: Hydraulics and Fluid Mechanics
The vapour pressure over the concave surface is________________?
A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to __________________?
A. the weight of the body
B. more than the weight of the body
C. less than the weight of the body
D. weight of the fluid displaced by the body
E. weight of body plus the weight of the fluid displaced hy the body
A perfect gas_________________?
A. has constant viscosity
B. has zero viscosity
C. is incompressible
D. is of theoretical interest
E. none of the above
Falling drops of water become spheres due to the property of ________________?
A. adhesion
B. cohesion
C. surface tension
D. viscosity
E. compressibility
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea_________________?
A. Venturimeter
B. Orifice plate
C. hot wire anemometer
D. rotameter
E. pitot tube
An ideal flow of any fluid must fulfill the following______________?
A. Newton’s law of motion
B. Newton’s law of viscosity
C. Pascal’ law
D. Continuity equation
E. Boundary layer theory
In a static fluid__________________?
A. resistance to shear stress is small
B. fluid pressure is zero
C. linear deformation is small
D. only normal stresses can exist
E. viscosity is nil
The property of fluid by virtue of which it offers resistance to shear is called____________________?
A. surface tension
B. adhesion
C. cohesion
D. viscosity
E. all of the above
The flow in which each liquid particle has a definite path and their paths do not cross each other is called____________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow
Reynolds number is significant in____________________?
A. supersonics, as with projectile and jet propulsion
B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
D. all of the above
E. none of the above
Recent Comments