# Hydraulics And Fluid Mechanics Set 13

This set of Hydraulics and Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Hydraulics And Fluid Mechanics Set 13

Q1 | Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as
Q2 | Which of the following is dimensionless?
Q3 | Coefficient of resistance is the ratio of
Q4 | Mercury does not wet glass. This is due to property of liquid known as
Q5 | A flow in which __________ force is dominating over the viscosity is called turbulent flow.
Q6 | Specific weight of sea water is more that of pure water because it contains
Q7 | In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.
Q8 | An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submergedin a fluid having specific gravity of
Q9 | The factional resistance of a pipe varies approximately with __________ of the liquid.
Q10 | For measuring flow by a Venturimeter, if should be installed in
Q11 | The ratio of the inertia force to the elastic force is called
Q12 | All the terms of energy in Bernoulli's equation have dimension of
Q13 | The pressure at a point 4 m below the free surface of water is
Q14 | Specific weight of water in S.I. units is equal to
Q15 | In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
Q16 | Poise is the unit of
Q17 | Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.
Q18 | The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
Q19 | The tangential velocity of the water element having a free vortex is
Q20 | The horizontal component of buoyant force is
Q21 | A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.
Q22 | The divergent portion of a Venturimeter is made longer than convergent portion in order to
Q23 | According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C =Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)
Q24 | In a free vortex motion, the radial component of velocity everywhere is
Q25 | Coefficient of contraction is the ratio of