181 Hydraulics McQ Chapter Wise Online Test of 25 Question #8 Hydraulics McQ Chapter Wise McQ online Test of 25 Question for PSC, NEC, UPSC, SSC and Many more. 1 / 25 1. In parallel-pipe problems A. the discharge is he same through all the pipes B. the head losses through each pipe are added to obtain the total head loss C. the head loss is the same through each pipe D. a direct solution gives the flow through each pipe when the total known. 2 / 25 2. The major loss of energy in long pipes is due to A. sudden enlargement B. sudden contraction C. gradual contraction or enlargement D. friction 3 / 25 3. For a long pipe, the head loss A. at the entrance is ignored B. at the outlet is ignored C. at the entrance and outlet are ignored D. due to friction is ignored 4 / 25 4. When a liquid is flowing full through a pipe, the velocity of the liquid is A. maximum at the centre and minimum near the walls B. minimum at the centre and maximum near the walls C. zero at the centre and maximum near the walls D. maximum at the centre and zero near the walls 5 / 25 5. The velocity of fluid particles at centre of pipe section is A. minimum B. maximum C. equal D. none of above 6 / 25 6. The velocity distribution of viscous fluid through a circular pipe is A. hyperbolic B. parabolic C. circular D. elliptical 7 / 25 7. The velocity distribution in a pipe is parabolic for A. uniform turbulent flow B. non-uniform turbulent flow C. uniform laminar flow D. neither laminar nor turbulent flow 8 / 25 8. The velocity distribution for laminar flow through a circular tube A. is constant over the cross section B. varies linearly from zero at walls to maximum at centre C. varies parabolically with maximum at the centre D. none of the above 9 / 25 9. The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is A. 1/2 B. 2/3 C. 3/2 D. 2 10 / 25 10. The ratio of maximum velocity to average velocity of viscous fluid through a circular pipe is A. 0.5 B. 0.75 C. 1.25 D. 2.00 11 / 25 11. For laminar flow in a pipe if the centre line velocity is 10 cm/sec, the average is A. 5 cm/sec B. 10 cm/sec C. 15 cm/sec D. 20 cm/sec 12 / 25 12. The distance y from the pipe boundary at which the point velocity is equal to average velocity is A. 0.223 R B. 0.323 R C. 0.423 R D. 0.523 R 13 / 25 13. The shear stress distribution in viscous fluid through a circular pipe is A. maximum at the centre B. maximum at the inside of surface C. same throughout the section D. none of these 14 / 25 14. The shear stress in a fluid flowing in a circular pipe A. is constant over the section B. is zero at the walls and increase linearly to the center C. is zero at the centre and varies linearly with the radius D. varies parabolically across the section 15 / 25 15. Which of the following is not true in case of pipe flow? A. There is no free surface B. The flow is essentially due to pressure difference C. The hydraulic gradient and water surface profile coincide with each other. D. The pressure distribution is not hydrostatic. 16 / 25 16. When the free liquid surface is exposed to the atmosphere, flow is called A. open channel flow B. pipe flow C. subcritical flow D. laminar flow 17 / 25 17. In open channel water flows under A. Force of gravity B. Atmospheric pressure C. Hydrostatic pressure D. Mechanical pressure 18 / 25 18. When designing the canals, the manning’s formula is generally used for A. non uniform flow B. uniform flow C. surface flow D. all of above 19 / 25 19. Manning’s formula is used for A. flow in pipes B. flow in open channels C. head loss due to friction in open channels D. head loss due to friction in pipe flowing full 20 / 25 20. According to manning’s formula the velocity is inversely proportional to A. rugosity coefficient B. HMD C. gradient D. all of above 21 / 25 21. The discharge in open channel is inversely proportional to A. roughness of the section B. sectional area C. slope of the channel D. hydraulic radius 22 / 25 22. In Manning’s equation the velocity of flow in open channels is inversely proportional to A. bed slope B. roughness coefficient C. hydraulic radius D. viscosity of water 23 / 25 23. A 2m width rectangular canal section has flowing water depth of 1.5m. The hydraulic radius of the section is A. 0.6m B. 2.66m C. 3m D. 5m 24 / 25 24. For maximum velocity occurring in a canal the hydraulic mean depth is A. minimum B. maximum C. medium D. none of above 25 / 25 25. Conveyance of a channel section is directly proportional to A. discharge B. area of cross-section C. bed-slope D. Manning’s coefficient Your score is The average score is 41% 0% Restart quiz Exit civil engineerhydraulics mcqmcq civilnecpscupsc
