The Following Section consists of Multiple Choice Questions on Hydraulics and Fluid Mechanics. Take the test on Hydraulics and Fluid Mechanics problems.
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Hydraulics and Fluid Mechanics MCQ
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Question 1 of 20
1. Question
1 pointsThe value of bulk modulus of a fluid is required to determine
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Question 2 of 20
2. Question
1 pointsIn a depressed nappe
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Question 3 of 20
3. Question
1 pointsIn one dimensional flow, the flow
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Question 4 of 20
4. Question
1 pointsThe kinematic viscosity is the
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Question 5 of 20
5. Question
1 pointsAn error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.
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Question 6 of 20
6. Question
1 pointsCoefficient of contraction is the ratio of
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Question 7 of 20
7. Question
1 pointsIn a free nappe,
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Question 8 of 20
8. Question
1 pointsCoefficient of resistance is the ratio of
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Question 9 of 20
9. Question
1 pointsIn order to measure the flow with a venturimeter, it is installed in
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Question 10 of 20
10. Question
1 pointsWhich of the following is an example of laminar flow?
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Question 11 of 20
11. Question
1 pointsThe pressure less than atmospheric pressure is known as
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Question 12 of 20
12. Question
1 pointsThe total energy line lies over the hydraulic gradient line by an amount equal to the
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Question 13 of 20
13. Question
1 pointsThe maximum efficiency of transmission through a pipe is
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Question 14 of 20
14. Question
1 pointsThe coefficient of viscosity may be determined by
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Question 15 of 20
15. Question
1 pointsThe stability of a dam is checked for
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Question 16 of 20
16. Question
1 pointsA manometer is used to measure
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Question 17 of 20
17. Question
1 pointsThe centre of gravity of the volume of the liquid displaced is called
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Question 18 of 20
18. Question
1 pointsThe coefficient of discharge for an external mouthpiece is
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Question 19 of 20
19. Question
1 pointsIf a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
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Question 20 of 20
20. Question
1 pointsThe weight per unit volume of a liquid at a standard temperature and pressure is called
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Hydraulics and Fluid Mechanics MCQ 2
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Question 1 of 20
1. Question
1 pointsThe metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
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Question 2 of 20
2. Question
1 pointsIn open channels, the specific energy is the
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Question 3 of 20
3. Question
1 pointsThe Bernoulli’s equation is based on the assumption that
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Question 4 of 20
4. Question
1 pointsThe velocity corresponding to Reynold number of 2800, is called
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Question 5 of 20
5. Question
1 pointsA flow in which __________ force is dominating over the viscosity is called turbulent flow.
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Question 6 of 20
6. Question
1 pointsReynold’s number is the ratio of inertia force to
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Question 7 of 20
7. Question
1 pointsA water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
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Question 8 of 20
8. Question
1 pointsWhich of the following statement is wrong?
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Question 9 of 20
9. Question
1 pointsThe flow of water through the hole in the bottom of a wash basin is an example of
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Question 10 of 20
10. Question
1 pointsA glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
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Question 11 of 20
11. Question
1 pointsA compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if
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Question 12 of 20
12. Question
1 pointsIn a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
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Question 13 of 20
13. Question
1 pointsThe velocity at which the laminar flow stops, is known as
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Question 14 of 20
14. Question
1 pointsWhen a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
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Question 15 of 20
15. Question
1 pointsThe Newton’s law of resistance is based on the assumption that the
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Question 16 of 20
16. Question
1 pointsThe Euler’s equation for the motion of liquids is based upon the assumption that
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Question 17 of 20
17. Question
1 pointsThe shear stress-strain graph for a newtonian fluid is a
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Question 18 of 20
18. Question
1 pointsA flow in which the viscosity of fluid is dominating over the inertia force is called
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Question 19 of 20
19. Question
1 pointsAn air vessel is provided at the summit in a syphon to
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Question 20 of 20
20. Question
1 pointsThe length of the divergent cone in a venturimeter is __________ that of the convergent cone.
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Hydraulics and Fluid Mechanics MCQ 3
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Question 1 of 20
1. Question
1 pointsA flow through a long pipe at constant rate is called
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Question 2 of 20
2. Question
1 pointsIn a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.
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Question 3 of 20
3. Question
1 pointsViscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.
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Question 4 of 20
4. Question
1 pointsThe total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)
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Question 5 of 20
5. Question
1 pointsWith an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will
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Question 6 of 20
6. Question
1 pointsWhich of the following statement is correct ?
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Question 7 of 20
7. Question
1 pointsThe velocity corresponding to Reynold number of 2000 is called
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Question 8 of 20
8. Question
1 pointsThe power transmitted through the pipe is maximum when the head lost due to friction is equal to
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Question 9 of 20
9. Question
1 pointsSelect the correct statement
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Question 10 of 20
10. Question
1 pointsThe force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called
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Question 11 of 20
11. Question
1 pointsThe most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
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Question 12 of 20
12. Question
1 pointsA flow is called sub-sonic, if the Mach number is
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Question 13 of 20
13. Question
1 pointsThe flow in a pipe is neither laminar nor turbulent when Reynold number is
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Question 14 of 20
14. Question
1 pointsFor a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
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Question 15 of 20
15. Question
1 pointsThe buoyancy depends upon the
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Question 16 of 20
16. Question
1 pointsThe total energy line lies over the centre line of the pipe by an amount equal to
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Question 17 of 20
17. Question
1 pointsA piezometer tube is used only for measuring
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Question 18 of 20
18. Question
1 pointsThe flow in a pipe is turbulent when Reynold number is
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Question 19 of 20
19. Question
1 pointsWhen a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
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Question 20 of 20
20. Question
1 pointsThe most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
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Hydraulics and Fluid Mechanics MCQ 4
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Question 1 of 20
1. Question
1 pointsWhen a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
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Question 2 of 20
2. Question
1 pointsThe hydraulic mean depth or the hydraulic radius is the ratio of
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Question 3 of 20
3. Question
1 pointsThe imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as
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Question 4 of 20
4. Question
1 pointsStoke is the unit of
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Question 5 of 20
5. Question
1 pointsThe absolute pressure is equal to
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Question 6 of 20
6. Question
1 pointsWhen the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
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Question 7 of 20
7. Question
1 pointsThe hammer blow in pipes occurs when
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Question 8 of 20
8. Question
1 pointsWhen a body is placed over a liquid, it will sink down if
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Question 9 of 20
9. Question
1 pointsA flow whose streamline is represented by a curve, is called
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Question 10 of 20
10. Question
1 pointsWhen the Mach number is less than unity, the flow is called
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Question 11 of 20
11. Question
1 pointsA flow is called hyper-sonic, if the Mach number is
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Question 12 of 20
12. Question
1 pointsThe intensity of pressure at any point, in a liquid, is
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Question 13 of 20
13. Question
1 pointsIf the depth of water in an open channel is greater than the critical depth, the flow is called
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Question 14 of 20
14. Question
1 pointsThe liquid used in manometers should have
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Question 15 of 20
15. Question
1 pointsThe Cippoletti weir is a __________ weir.
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Question 16 of 20
16. Question
1 pointsWhen a body is placed over a liquid, it will float if
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Question 17 of 20
17. Question
1 pointsThe pressure of a liquid measured with the help of a piezometer tube is
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Question 18 of 20
18. Question
1 pointsThe hydraulic gradient line lies over the centre line of the pipe by an amount equal to the
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Question 19 of 20
19. Question
1 pointsThe flow in a pipe or channel is said to be non-uniform when
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Question 20 of 20
20. Question
1 pointsThe ratio of the inertia force to the viscous force is called
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