Which of the following statement is wrong?
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.
Correct Answer :
C. The length of divergent portion in a Venturimeter is equal to the convergent portion.
Related Questions
The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.
Decreases
Increases
Remain same
None of these
Hydrometer is used to determine
Specific gravity of liquids
Specific gravity of solids
Specific gravity of gases
Relative humidity
A flow whose streamline is represented by a curve, is called
One-dimensional flow
Two-dimensional flow
Three-dimensional flow
Four-dimensional flow
The maximum discharge over a broad crested weir is
0.384 Cd × L × H1/2
0.384 Cd × L × H3/2
1.71 Cd × L × H1/2
1.71 Cd × L × H3/2
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
Specific weight
Specific mass
Specific gravity
Specific density
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is
400 kg/cm²
4000 kg/cm²
40 × 10⁵ kg/cm²
40 × 10⁶ kg/cm²
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
Pascal's law
Archimedess principle
Principle of floatation
Bernoulli's theorem
For a floating body to be in equilibrium
Meta centre should be above e.g.
Centre of buoyancy and e.g. must lie on same vertical plane
A righting couple should be formed
All of the above
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is
wA
wx
wAx
wAx/sinθ
The flow in which each liquid particle has a definite path and their paths do not cross each other is called
One dimensional flow
Streamline flow
Steady flow
Turbulent flow
The absolute pressure is equal to
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure
Atmospheric pressure - gauge pressure
Gauge pressure - vacuum pressure
The coefficient of venturi-flume, generally, lies between
0.3 to 0.45
0.50 to 0.75
0.75 to 0.95
0.95 to 1.0
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as
One dimensional flow
Uniform flow
Steady flow
Turbulent flow
Surface tension
Acts in the plane of the interface normal to any line in the surface
Is also known as capillarity
Is a function of the curvature of the interface
Decreases with fall in temperature
A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
One
Two
Three
Four
Venturimeter is used to
Measure the velocity of a flowing liquid
Measure the pressure of a flowing liquid
Measure the discharge of liquid flowing in a pipe
Measure the pressure difference of liquid flowing between two points in a pipe line
The resultant upward pressure of the fluid on an immersed body is called
Up-thrust
Buoyancy
Center of pressure
All the above are correct
Which of the following is an example of laminar flow?
Underground flow
Flow past tiny bodies
Flow of oil in measuring instruments
All of these
The region between the separation streamline and the boundary surface of the solid body is known as
Wake
Drag
Lift
Boundary layer
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)
A × √(m × i)
C × √(m × i)
AC × √(m × i)
mi × √(A × C)
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
Gauge pressure
Absolute pressure
Positive gauge pressure
Vacuum pressure
The unit of dynamic viscosity in S.I. units is
N-m/s2
N-s/m2
Poise
Stoke
The value of bulk modulus of a fluid is required to determine
Reynold's number
Froude's number
Mach number
Euler's number
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by
dQ/Q = 3/2 × (dH/H)
dQ/Q = 2 × (dH/H)
dQ/Q = 5/2 × (dH/H)
dQ/Q = 3 × (dH/H)
In a forced vortex, the velocity of flow everywhere within the fluid is
Maximum
Minimum
Zero
Nonzero finite
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
μ π³ N² R² /1800 t
μ π³ N² R⁴ /1800 t
μ π³ N² R² /3600 t
μ π³ N² R⁴ /3600 t
The pressure measured with the help of a Piezometer tube is in
N/mm2
N/m2
Head of liquid
All of these
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
Plus
Minus
Divide
None of these
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
Less than
More than
Equal to
None of these
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be
500 kg
1000 kg
1500 kg
2000 kg