For more questions please visit http://parikshaa.blogspot.in

Q.1. are the velocities of flow before and after sudden enlargement in a pipe. The loss of head as given by Boards equation would be

ANSWER: (a) Q.2. Ratio of normal force of jet of water on a plate Inclined at an angle 30degree as compared to that when the plate is normal to jet is

ANSWER: (c) Q.3. Head loss due to a sudden enlargement in a pipe is

ANSWER: (b)

Q.4. The losses in open channel vary proportional to

ANSWER: (b)

Q.5. Turbulent flow is hydraulically smooth if ratio

(a) 1.00 (b) 0.75 (c) 0.50 (d) 0.25 ANSWER: (d) Q.6. The friction head lost due to flow of a viscous

For more questions please visit http://parikshaa.blogspot.in fluids through a circular pipe of length L and diameter d with a velocity v, and pare friction factor ‘f’ is

ANSWER: (a) Q.7. Continuity equation for an incompressible fluid is

where V = velocity, p = density and A = area ANSWER: (a) Q.8: The curvature of the earth ls taken into account when the extent of area is more than:

Answer. (b) Q.9. Discharge over a sharp-edged rectangular notch of width w and depth h is equal to

ANSWER: (c) Q.10. A low pressure of the order of measured in a chamber with (a) Manometer (b) Bourdon vacuum gauge (c) Pirani gauge (d) Ionisation chamber ANSWER: (a)

torr can be

Q.11. In a free vortex motion, tangential velocity of

For more questions please visit http://parikshaa.blogspot.in the water particles is proportional to where, r = distance from the centre.

ANSWER: (c) Q.12. If V is the mean velocity of flow, then according to Darcy-Weisbach equation for pipe flow, energy loss over a length of pipe is proportional

ANSWER: (b)

Q.13.Total pressure on the top of a closed cylindrical vessel of radius r filled with liquid is proportional to

ANSWER: (d) Q.14. To replace a pipe of diameter D by n parallel pipes of diameter d, the formula used is

ANSWER: (d)

Q.15. For pipe flow, at constant diameter, capacity is proportional to

ANSWER: (c) Q.16. The drag coefficient for laminar flow varies as (where Re = Reyonlds number)

For more questions please visit http://parikshaa.blogspot.in

ANSWER: (d)

Q.17. in the Moody diagram shown in the figure below, fiction factor for turbulent flow in a smooth pyre is given by the curve

(a) A (b) B (c) C (d) D (e) E ANSWER: (d)

Q.18. Form of a Reynolds number is

ANSWER: (d)

Q.19. The force P on 5 m wide gate is

(a) 721 kN (b) 653 kN (c) 602 kN (d) 545 kN ANSWER: (c)

For more questions please visit http://parikshaa.blogspot.in

Q.20.

(a) Froudes number (b) Mach number (c) Weber number (d) Euler number ANSWER: (d)

Q.21. The turbulent boundary layer thickness varies as

ANSWER: (b) Q.22. Viscosity of a fluid with specific gravity 1.3 is measured to be 0.0034 . Its kinematic viscosity, in is

ANSWER: (d) Q.23. When pressure p, flow rate Q, diameter D, and density d, a dimensionless group is represented by

ANSWER: (a)

Q.24: The sum of interior angles of a chased traverse is:

Answer. (b)

Q.25: The arithmetical checks on reduction of levels by rise and fall methods are:

For more questions please visit http://parikshaa.blogspot.in

Answer. (c)