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This set of Hydraulics and Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Hydraulics And Fluid Mechanics Set 24
Q1 | The coefficient of discharge for an external mouthpiece depends upon
- velocity of liquid
- pressure of liquid
- area of outhpiece
- length of mouthpiece
Q2 | The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy.
- Agree
- Disagree
Q3 | When an internal mouthpiece is running full, the discharge through the mouthpiece is twice the discharge when it is running free.
- Right
- Wrong
Q4 | A flow whose streamline is represented by a curve, is called
- one-dimensional flow
- two-dimensional flow
- three-dimensional flow
- four-dimensional flow
Q5 | The intensity of pressure on an immersed surface
- does not change
- increases
- decreases
Q6 | A channel is said to be of most economical cross-section, if
- it gives maximum discharge for a given cross-sectional area and bed slope
- it has minimum wetted perimeter
- it involves lesser excavation for the designed amount of discharge
- all of the above
Q7 | According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.
- Correct
- Incorrect
Q8 | The highest efficiency is obtained with a channel of
- circular
- square
- rectangular
- trapezoidal
Q9 | Poise is the unit of viscosity in C.G.S. system of units.
- Agree
- Disagree
Q10 | The discharge through a convergent mouthpiece is
- equal to
- one-half
- three fourth
- double
Q11 | The viscosity of a liquid is due to cohesion of its particles.
- Correct
- Incorrect
Q12 | When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward
- concave
- convex
Q13 | A manometer can be used to measure vacuum pressures.
- Agree
- Disagree
Q14 | The formula for discharge over a sharp-crested weir and Ogee weir is same as that of a rectangular weir.
- Agree
- Disagree
Q15 | A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called
- steady flow
- uniform flow
- streamline flow
- turbulent flow
Q16 | The dynamic viscosity of the liquid
- remain unaffected
- increases
- decreases
Q17 | The force of buoyancy is always
- equal to
- less than
- more than
Q18 | One stoke is equal to
- 10-2m2/s
- 10-3m2/s
- 10-4m2/s
- 10-6m2/s