# Hydraulics And Fluid Mechanics Set 9

This set of Hydraulics and Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Hydraulics And Fluid Mechanics Set 9

Q1 | The velocity of the liquid flowing through the divergent portion of a Venturimeter
Q2 | The volumetric change of the fluid caused by a resistance is known as
Q3 | If the depth of water in an open channel is less than the critical depth, the flow is called
Q4 | Choose the wrong statement
Q5 | An orifice is said to be large, if
Q6 | A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?
Q7 | The centre of pressure acts __________ the centre of gravity of immersed surface.
Q8 | Dynamic viscosity of most of the liquids with rise in temperature
Q9 | The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)
Q10 | A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is
Q11 | Select the correct statement
Q12 | The shear stress-strain graph for a Newtonian fluid is a
Q13 | The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as
Q14 | Uniform flow occurs when
Q15 | At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
Q16 | The discharge through a channel of trapezoidal section is maximum when
Q17 | Piezometer is used to measure
Q18 | The point at which the resultant pressure on an immersed surface acts, is known as
Q19 | Choose the wrong statement
Q20 | The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure at 2.5 m below the oil surface will be
Q21 | The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is
Q22 | The flow which neglects changes in a transverse direction is known as
Q23 | The mass per unit volume of a liquid at a standard temperature and pressure is called
Q24 | A large Reynold number is indication of
Q25 | Which of the following statement is wrong?