Four piezometer openings in the same cross-section of a cast iron pipe indicate the following pressure for simultaneous reading: 43, 42.6, 42.4 37 mm Hg. What value should be taken for the pressure?
A.41.5
B.43
C.37
D.42.67
E.None of the above
Category: Fluid Mechanics and Hydraulic Machines Mcqs
The upper surface of the weir over which water flows is known as
A.Nappe
B.Crest
C.Sill
D.Vein
E.Contracta
The speed of a submariue can be measured by
A.Pitot tube
B.Hot wire anemometer
C.Pirani gauge
D.Inclined manometer
E.Any of the above
The hydraulic radius is given by
A.Wetted perimeter divided by area
B.Area divided by square of wetted perimeter
C.Square root of area
D.Area divided by wetted perimeter
E.None of these answers
If the specific speed of a turbine is 6 then the turbine should be
A.Francis
B.Kaplan
C.Pelton wheel
D.Thomson
E.Fourneyron
1 atm pressure is equivalent to
A.1.01315 x 105 N/m2
B.700 mm Hg
C.1.0133 x 105 kg/m-sec2
D.1.0133 x 106 kg/cm-sec2
E.Any of the above
Newton’s law of viscosity relates
A.Shear stress and rate of angular deformation in a fluid
B.Yield shear stress, rate of angular deformation and viscosity
C.Pressure, velocity and viscosity
D.Shear stress, temperature, viscosity and velocity
E.Pressure, vicosity and rate of angular deformation
In a channel the flow at critical depth occurs when
A.Normal depth and critical depth coincide for a channel
B.Specific energy is a maximum for a given discharge
C.Hydraulic gradient and slope coincide
D.Any changes in depth require more specific energy
The breaking up of a liquid into fine droplets by spraying is called
A.Vaporization
B.Carburetion
C.Atomisation
D.Ionisation
E.Injection
The Boundary layer on a flat plate is calld laminar boundary layer if
A.Reynold No. is less than 2000
B.Reynold No. is less that 4000
C.Reynold No. is less than 5 x 105
D.None of the above
