Fluid Mechanics Problems- Fluid Mechanics and Hydraulic Machines Quiz

The hydrostatic force on one side of a submerged surface of unit area with centroid 3m below the free surface of the liquid is

One pipe system is said to be equivalent to another when the following quantifies are the same

The pressure at the throat of Venturimeter is

Surface tension of a fluid is zero

A fluid is said to be the irrotational when

The normal stress is the same on all the planes at any point in a fluid only when the fluid is

A 1:10 Reduced scale model of a water turbine runs at the same speed as the prototype turbine.The ratio of Prototype to model turbine discharges should be

All the terms of Bernoulli’s equation:(ρ/r)+(V2/2g)+Z =Constant have the units of

The power dissipated in a light loaded viscous fluid lubricated bearing at ‘N’ r.p.m. is 1 kilowatt.The power dissipated at 2N r.p.m. would be

The thickness of laminar boundary layer on that plate is 2 cm at x = L/2.The thickness at x = L is

A plane lamina in the form of a hollow circle of outer and inner diameters 2 m and 1 m respectively is immersed in a liquid of specific gravity 0.878 such that its extreme edges are at depths of 1.20 m and 2.2 m below the free surface.The hydrostatic force on one side of lamina,in KN is

The velocity field in a 3-D is given by
u=-x;v=2y and w=(3-z).The equation of the stream line that passes through a point (1,1,1) is

Two pipes carrying water and Nitro-benzene are connected by a Mercury differential gauge as shown in figure.The difference in pressure (P1-P2),in kPa is

The change in moment of momentum of fluid due to flow along with curved path results in

A Bush Bearing of length 30 cm and diameter 18.01 cm supports a shaft of 18 cm diameter. The shaft rotates at 36.65 rad/sec.The viscosity of the lubricant is 1.96 poise.The Power dissipated in the bearing,in kW,is

A metal ball weight 9 kN in air and 7.5 kN in a fluid of specific gravity 0.75,then specific gravity of ball material is

In a straight uniform pipe,the discharge is reduced from 1001 p.s. to zero in 10 seconds.The cross section area of the pipe is 200 Sq.cm.The nature and value of acceleration is

Pick out the dimensionless parameter

A Pitot-tube measures

All the terms of Bernoulli’s equation:(ρ/r)+(V2/2g)+Z =Constant have the units of

If (ϕ) = xy m2/sec,the resultant velocity at point (1,1) in m/sec is

The shear stress in a fluid is given according Fluid Power(Rheological) equation
Tow = 0.08(du/dy)Power(0.8).How is the Fluid Classified?

Assuming that the Kinematic viscosity of water is 1 Centistokes at room temperature,then the maximum permissible pipe diameter for maintaining laminar flow with an average velocity of 1m/s is

Crude oil of specific gravity 0.82 to is pumped through a pipe of 150 mm diameter at the rate of 10 litres per second with a pressure gradient of 0.1 kPa/m.The type of flow is

Two pipes one of 100 mm diameter,0.2 km long and another of 150 mm diameter,0.4 Km long are connected in parallel.The friction factors are 0.0075 for the smaller pipe and 0.006 for the large pipe.The total discharge through the system is 50 Lit/sec.The head in smaller diameter pipe is

Two pipes one of 100 mm diameter,0.2 km long and another of 150 mm diameter,0.4 Km long are connected in parallel.The friction factors are 0.0075 for the smaller pipe and 0.006 for the large pipe.The total discharge through the system is 50 Lit/sec.The equivalent length of a 200 mm diameter by having friction factor of 0.005 is

The nozzle of a pelton wheel gives Jet of 90 mm diameter and velocity of 75 m/sec.Velocity coefficient of nozzle is 0.978.The PCD of wheel is 1.5 m and water deflection angle of bucket is 170 degrees the wave velocity is 0.46 times the jet velocity.The shaft torque developed by pelton wheel is

The nozzle of a pelton wheel gives Jet of 90 mm diameter and velocity of 75 m/sec.Velocity coefficient of nozzle is 0.978.The PCD of wheel is 1.5 m and water deflection angle of bucket is 170 degrees the wave velocity is 0.46 times the jet velocity. The efficiency of the Turbine is