Hydraulics and Fluid Mechanics Quiz - Set 02 Mech Sub-Wise Quiz Quiz Questions 01. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift. (A) True (B) False 02. A flow in which each liquid particle does not have a definite path and the paths of individual particles also cross each other is called turbulent flow. (A) Agree (B) Disagree 03. If an incompressible liquid is continuously flowing through a pipe, the quantity of liquid passing per second is different at different sections. (A) True (B) False 04. The total pressure on the bottom of a closed cylindrical vessel completely filled up with a liquid is the sum of the total centrifugal pressure and the weight of the liquid in the vessel. (A) Correct (B) Incorrect 05. In an internal mouthpiece, if the jet after contraction expands and fills up the whole mouthpiece, then the mouthpiece is said to be running free. (A) True (B) False 06. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity. (A) Agree (B) Disagree 07. A closed tank is completely filled with an oil. If it is made to move with a horizontal acceleration, then the pressure at the back end will be more than that at the front end. (A) Correct (B) Incorrect 08. The difference between the notch and weir is that the notch is of bigger size and the weir is of a smaller size. (A) Agree (B) Disagree 09. The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump. (A) Yes (B) No 10. In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water. (A) Correct (B) Incorrect 11. If a body floating in a liquid does not return back to its original position and heels farther "away when given a small angular displacement, the body is said to be in neutral equilibrium. (A) Yes (B) No 12. The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy. (A) Agree (B) Disagree 13. The centre of buoyancy is the centre of area of the immersed body. (A) Correct (B) Incorrect 14. When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe (A) Yes (B) No 15. The hydraulic gradient line may be above or below the centre line of the pipe. (A) True (B) False 16. When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water. (A) True (B) False 17. In a Venturimeter, the velocity of liquid at throat is __________ than at inlet. (A) Higher (B) Lower 18. A flow through an expanding tube at increasing rate is called unsteady non-uniform flow. (A) Yes (B) No 19. The water hammer in pipes occurs due to sudden change in the velocity of flowing liquid (A) Agree (B) Disagree 20. The hydraulic gradient line is always parallel to the centre line of the pipe. (A) Correct (B) Incorrect Submit Test Quiz Set - 03 Online Quiz Home Page