01.The shear stress velocity gradient relation of the Newtonian fluids is
Linear.
02.The units of kinematic viscosity
m2/sec.
03.The units of surface tension
Energy/unit area.
04.Newton's law of viscosity relates
Shear stress and rate of angular deformation in a fluid.
05.SI unit of viscosity is
10 times poise.
06.The upper critical Reynolds number is
About 2000.
07.The Weber number is the ratio of
Inertial forces to surface tension force.
08.Froude number is useful in calculations for
Hydraulic jump.
09.The bulk modulus of elasticity
Is independent of pressure and viscosity.
10.A barometer is used to measure
Atmospheric pressure.
11.A simple pitot tube is used to measure
The velocity in a flowing stream.
12.A rotameter is a device used to measure
Flow of fluids.
13.A hydrometer is used to determine
Specific gravity of liquids.
14.The flow of water in a pipe of diameter 3000 mm can be measured by
Pitot tube.
15.The resultant hydrostatic force acts through a point known as
Centre of Pressure.
16.The continuity equation
Relates the mass rate of flow along a stream line.
17.The equation of continuity of flow is based on the principle of conservation of
Mass.
18.The general energy equation is applicable to
Steady flow.
19.The continuity equation in ideal fluid flow
States that energy is constant everywhere in the fluid.
20.A control volume refers to
An open system.
21.The eddy viscosity for turbulent flow is
Dependent on flow.
22.A Kaplan turbine is suitable for
Low head high discharge.
23.In case of forced vortex
Velocity increases with radius.
24.Which two forces are most important in floating bodies
Buoyancy, gravity.
25.The line of action of the buoyant force acts through the
Centroid of the displaced volume of fluid.
26.The flow in a pipe is laminar if the Reynolds number is
Less than 2000.
27.Frictional resistance in a pipe increases with the
square of velocity.
28.Pressure co-efficient is a ratio of pressure forces to
Intertial forces.
29.A hot wire anemometer is used for the measurement of
Velocity of gases.
30.The most efficient cross-section for a channel is
Half hexagon in the form of a trapezoid.
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