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Civil Engineering Hydraulics/Fluid Mechanics Mock test – 3

Welcome to your Hydraulics Mock test - 3
Take an exciting test in Hydraulics/Fluid Mechanics
You have only 20 mins to complete the test (25 Questions)
Wish you all the best!!!
1. Uniform flow is said to occur when
2. To avoid vapourisation, pipe lines are laid over the ridge so that these are above the hydraulic gradient line, not more than
3. f total head available at the inlet of pipe and f1 is the loss of head due to friction in the pipe, the maximum efficiency of transmission of power (ηmax) is
4. The following is not a laminar flow
5. For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be
6. Most economical section of a triangular channel, is
7. To avoid an interruption in the flow of a syphon, an air vessel is provided
8. The value of momentum correction factor (β) for a laminar flow through a circular pipe, is
9. Fluids change the volume under external presssure due to
10. The rise of the liquid along the walls of a revolving cylinder above the initial level, is
11. Manometers are used to measure
12. Cappoletti weir is a
13. For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is
14. If velocities 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
15. The best side slope for most economical trapezoidal section, is
16. Discharge over an ogee weir remains the same as that of
17. Piezometers are used to measure
18. Shear stress is directly proportional to
19. Molecules of fluids get attracted due to
20. Atmospheric pressure is equal to water column head of
21. When no air is left below the nappe and water stream adheres to the down stream face of the weir, it is known as
22. An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to
23. Dimensions of the dynamic viscosity (μ) are
24. In an open tube, free surface of mercury remains
25. On an inclined plane, centre of pressure is located

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