Questions and answers for exam Preparation

MCQs

Total Questions : 1709 | Page 170 of 171 pages

Question 1691. The equation of continuity holds good when the flow __________________?

is steady
is one dimensional
velocity is uniform at all the cross sec-tions
all of the above
none of the above

Discuss Question

Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1692. The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream________________?

keeps on increasing
keeps on decreasing
remains constant
may increase/decrease
unpredictable

Discuss Question

Answer: Option C. -> remains constant
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1693. Pitot tube is used for measurement of__________________?

pressure
flow
velocity
discharge
viscosity

Discuss Question

Answer: Option C. -> velocity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1694. Reynolds number is significant in____________________?

supersonics, as with projectile and jet propulsion
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
all of the above
none of the above

Discuss Question

Answer: Option B. -> full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1695. Froude number is significant in____________________?

supersonics, as with projectile and jet propulsion
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
all of the above
none of the above

Discuss Question

Answer: Option 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
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1696. Normal depth in open channel flow is the depth of flow corresponding to_______________?

steady flow
unsteady flow
laminar flow
uniform flow
critical flow

Discuss Question

Answer: Option D. -> uniform flow
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1697. For hypersonic flow, the Mach number is___________________?

unity
greater than unity
greater than 2
greater than 4
greater than 10

Discuss Question

Answer: Option D. -> greater than 4
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1698. Two dimensional flow occurs when___________________?

the direction and magnitude of the velocity at all points are identical
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
the magnitude and direction of the velocity do not change from point to point in the fluid
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
velocity, depth, pressure, etc. change from point to point in the fluid flow

Discuss Question

Answer: Option D. -> the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1699. The fluid forces considered in the Navier Stokes equation are__________________?