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
Related Mcqs:
- For hypersonic flow, the Mach number is___________________?
A. unity
B. greater than unity
C. greater than 2
D. greater than 4
E. greater than 10 - Addition of copper to aluminium results in_____________________?
A. improvement of casting characteristics
B. improvement of corrosion resistance
C. one of the best known age and precipitation-hardening systems
D. improving machinability
E. none of the above - Froude 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 - The bulk modulus of elasticity with increase in pressure__________________?
A. increases
B. decreases
C. remains constant
D. increases first up to certain limit and then decreases
E. unpredictable - A pressure of 25 m of head of water is equal to_________________?
A. 25 kN/m2
B. 245 kN/m2
C. 2500 kN/m2
D. 2.5kN/m2
E. 12.5 kN/m2 - Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem_________________?
A. Venturimeter
B. Orifice plate
C. nozzle
D. pitot tube
E. all of the above - When a body floating in a liquid, is displaced slightly, it oscillates about _________________?
A. e.g. of body
B. center of pressure
C. center of buoyancy
D. metacentre
E. liquid surface - Flow occurring in a pipeline when a valve is being opened is________________?
A. steady
B. unsteady
C. laminar
D. vortex
E. rotational - True one-dimensional flow occurs when_________________?
A. the direction and magnitude of the veiocity at all points are identical
B. the velocity of successive fluid par-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 plane
E. velocity, depth, pressure etc. change from point to point in the fluid flow - To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?
A. 2.4 m above the hydraulic gradient
B. 6.4 m above the hydraulic gradient
C. 10.0 m above the hydraulic gradient
D. 5.0 above the hydraulic gradient
E. none of the above
