59 Hydraulics McQ Chapter Wise Online Test of 25 Question #4 Hydraulics McQ Chapter Wise McQ online Test of 25 Question for PSC, NEC, UPSC, SSC and Many more. 1 / 25 1. If a pressure is applied on the surface of a liquid, the liquid transmits the pressure equal direction is the law by A. Newton B. Archimedes C. Bernoulli D. Pascal 2 / 25 2. 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 at rest 3 / 25 3. The pressure at a point in a fluid will not be same in all the directions when the fluid is A. moving B. viscous C. viscous and static D. viscous and moving 4 / 25 4. Uniform flow occurs A. whenever the flow is steady B. when (𝜕𝑣⁄𝜕t) is every where zero C. only when the velocity vector at any point remains constant D. when 𝜕𝑣⁄𝜕𝑠 = 0 5 / 25 5. The flow in a pipe or channel is said to be uniform when A. The liquid particles at all sections have same velocities B. The liquid particles at all sections have different velocities C. The quantity of liquid flowing per second is constant D. Each liquid particles has different path 6 / 25 6. When the flow parameters at any given instant remain same at every point, then flow is said to be A. quasi static B. steady state C. laminar D. uniform 7 / 25 7. A flow in which quantity of liquid flowing per second is constant is called A. non uniform flow B. turbulent flow C. steady flow D. unsteady flow 8 / 25 8. In steady flow of a fluid, the total acceleration of any fluid particle A. can be zero B. is never zero C. is always zero D. is independent of coordinates 9 / 25 9. Steady flow occurs when A. conditions do not change with time at any point B. conditions are the same at adjacent points at any instant C. when (𝜕𝑣⁄𝜕𝑠) is constant D. conditions change steadily with the time 10 / 25 10. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called A. steady B. uniform C. turbulent D. laminar 11 / 25 11. If fluid or flow parameters at any given instant remain same at every point in space, it is called A. steady flow B. laminar flow C. uniform flow D. rotational flow 12 / 25 12. Flow in a pipe is laminar if the Reynold’s number is A. Less than 2000 B. Between 2000 and 4000 C. Between 4000 and 6000 D. Equal to 10000 13 / 25 13. The flow in open channel is laminar if the Reynold’s number is A. less than 500 B. more than 500 C. 1000 D. none of these 14 / 25 14. If the fluid particles moves in zig-zag way, the flow is called A. unsteady B. non uniform C. turbulent D. incompressible 15 / 25 15. If velocity of fluid particles vary from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be A. laminar B. turbulent C. uniform D. non uniform 16 / 25 16. Flow in pipes is turbulent if the Reynold number is A. less than 2100 B. more than 3000 C. between 2100 and 3000 D. none of above 17 / 25 17. For a flow to be turbulent in an open channel Reynold’s number should not be less than A. 500 B. 1000 C. 1500 D. 2000 18 / 25 18. One dimensional flow is A. steady uniform flow B. uniform flow C. flow which neglects transverse direction D. restricted to flow in a straight line 19 / 25 19. A practical example of steady non-uniform flow is given as the A. motion of a river around bridge piers B. steadily increasing flow through a pipe C. steadily increasing flow through a reducing section D. constant discharge through a long, straight tapering pipe 20 / 25 20. A steady uniform flow is through A. a long pipe at decreasing rate B. a long pipe at constant rate C. an expanding tube at constant rate D. an expanding tube at increasing rate 21 / 25 21. Equation of continuity of fluid is applicable only if A. flow is steady B. flow is incompressible C. flow is one dimensional D. all of above. 22 / 25 22. Equation of continuity is based on the principle of conservation of A. mass B. energy C. momentum D. none of the above 23 / 25 23. Continuity equation in fluid mechanics deals with the law of conservation of A. mass B. momentum C. energy D. none of above 24 / 25 24. The continuity equation 𝜌1𝐴1𝑣1 = 𝜌2𝐴2𝑣2 is based on the following assumption regarding flow of fluid. A. steady flow B. uniform flow C. incompressible flow D. frictionless flow where pi and p2 are mass densities 25 / 25 25. An ideal flow of liquid obeys A. continuity equation B. Newton's second law of motion C. Newton's law of viscosity D. dynamic viscosity Your score is The average score is 46% 0% Restart quiz Exit civil engineerhydraulics mcqmcqcivilmock testnecpscupsc
