dQ/Q = (1/2) × (dH/H)
dQ/Q = (3/4) × (dH/H)
dQ/Q = (dH/H)
dQ/Q = (3/2) × (dH/H)
D. dQ/Q = (3/2) × (dH/H)
Metres² per sec
kg sec/metre
Newton-sec per metre
Newton-sec per metre
Pressure head
Velocity head
Pressure head + velocity head
Pressure head - velocity head
Moving
Viscous
Viscous and static
Viscous and moving
50 %
56.7 %
66.67 %
76.66 %
(8/15) Cd. 2g. H
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H²
(8/15) Cd. 2g. H5/2
The direction and magnitude of the velocity at all points are identical
The velocity of successive fluid particles, at any point, is the same at successive periods of time
The magnitude and direction of the velocity do not change from point to point in the fluid
The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane
μ π³ N² R² /1800 t
μ π³ N² R⁴ /1800 t
μ π³ N² R² /3600 t
μ π³ N² R⁴ /3600 t
A flow whose streamline is represented by a curve is called two dimensional flow.
The total energy of a liquid particle is the sum of potential energy, kinetic energy and pressure energy.
The length of divergent portion in a Venturimeter is equal to the convergent portion.
A pitot tube is used to measure the velocity of flow at the required point in a pipe.
15.3 m
25.3 m
35.3 m
45.3 m
Pascal law
Newton's law of viscosity
Boundary layer theory
Continuity equation
5 mm
10 mm
20 mm
30 mm
Fluid
Water
Gas
Ideal fluid
Remain unaffected
Increases
Decreases
None of these
Gravity, pressure and viscous
Gravity, pressure and turbulent
Pressure, viscous and turbulent
Gravity, viscous and turbulent
Low pressure
High pressure
Moderate pressure
Vacuum pressure
The liquid particles at all sections have the same velocities
The liquid particles at different sections have different velocities
The quantity of liquid flowing per second is constant
Each liquid particle has a definite path
Maximum at the centre and minimum near the walls
Minimum at the centre and maximum near the walls
Zero at the centre and maximum near the walls
Maximum at the centre and zero near the walls
Adhesion
Cohesion
Viscosity
Compressibility
w × Q × H
w × Q × hf
w × Q (H - hf)
w × Q (H + hf)
Lift
Drag
Stagnation pressure
Bulk modulus
Narrow-crested weir
Broad-crested weir
Ogee weir
Submerged weir
Steady flow
Unsteady flow
Laminar flow
Turbulent flow
Equal to
Less than
More than
None of these
100 cm3
250 cm3
500 cm3
1000 cm3
Steady
Unsteady
Both A and B
None of these
Kinematic viscosity in C. G. S. units
Kinematic viscosity in M. K. S. units
Dynamic viscosity in M. K. S. units
Dynamic viscosity in S. I. units
Avoid the tendency of breaking away the stream of liquid
To minimise frictional losses
Both (A) and (B)
None of these
Atmospheric pressure
Surface tension
Force of adhesion
Force of cohesion
Maximum
Minimum
Zero
Nonzero and finite
Supersonics, as with projectiles and jet propulsion
Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
Simultaneous motion through two fluids where there is a surface of discontinuity, gravity force, and wave making effects, as with ship's hulls
All of the above