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
Related Mcqs:
- 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 - Sludge banks are formed if sewage is disposed of in____________________ ?
A. Rivers
B. Seas
C. Lakes
D. None of these - Mach number is significant in___________________?
A. supersonics, as with projectiles 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 force, and wave making effects, as with ship’s hulls
D. all of fhe above
E. none of the above - Which one of the following gases is most significant as air pollutant ?
A. Carbondioxide
B. Oxygen
C. Nitrogen
D. Sulphur-dioxide - The normal stress in a fluid will be constant in all directions at a point only if_________________?
A. it is incompressible
B. it has uniform viscosity
C. it has zero viscosity
D. it is frictionless
E. it is at rest. - The volumetric change of the fluid caused by a resistance is known as_________________?
A. volumetric strain
B. volumetric index
C. compressibility
D. adhesion
E. cohesion - Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_______________?
A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above - A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is __________________?
A. 9,000 kg
B. 13,500 kg
C. 18,000 kg
D. 27,000 kg
E. 30,000 kg - In the case of steady flow of a fluid, the acceleration of any fluid particle is__________________?
A. constant
B. variable
C. zero
D. zero under limiting conditions
E. never zero - In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?
A. frictional force
B. viscosity
C. surface friction
D. all of the above
E. none of the above