Water is a __________ fluid.
Real
Ideal
Newtonian
Non-Newtonian
Correct Answer :
C. Newtonian
Related Questions
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre
Coincides with its centre of gravity
Lies above its centre of gravity
Lies below its centre of gravity
Lies between the centre of buoyancy and centre of gravity
The meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is
4.1 s
5.2 s
10.4 s
14.1 s
The pressure at a point in a fluid will not be same in all the directions when the fluid is
Moving
Viscous
Viscous and static
Viscous and moving
The highest efficiency is obtained with a channel of __________ section.
Circular
Square
Rectangular
Trapezoidal
A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called
Steady flow
Uniform flow
Streamline flow
Turbulent flow
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)
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.
H/3
H/2
2H/3
3H/4
Hot wire anemometer is used to measure
Pressure in gases
Liquid discharge
Pressure in liquids
Gas velocities
The angle of contact in case of a liquid depends upon
The nature of the liquid and the solid
The material which exists above the free surface of the liquid
Both of die above
Any one of the above
A flow in which __________ force is dominating over the viscosity is called turbulent flow.
Elastic
Surface tension
Viscous
Inertia
Fluid is a substance that
Cannot be subjected to shear forces
Always expands until it fills any container
Has the same shear stress at a point regardless of its motion
Cannot remain at rest under action of any shear force
Which of the following instruments is used to measure flow on the application of Bernoulli's theorem?
Venturimeter
Orifice plate
Nozzle
All of the above
The velocity corresponding to Reynold number of 2800, is called
Sub-sonic velocity
Super-sonic velocity
Lower critical velocity
Higher critical velocity
Hydrometer is used to determine
Specific gravity of liquids
Specific gravity of solids
Specific gravity of gases
Relative humidity
Select the correct statement
Weber's number is the ratio of inertia force to elastic force.
Weber's number is the ratio of gravity force to surface tension force.
Weber's number is the ratio of viscous force to pressure force.
Weber's number is the ratio of inertia force to surface tension force.
A fluid which obeys the Newton's law of viscosity is termed as
Real fluid
Ideal fluid
Newtonian fluid
Non-Newtonian fluid
The discharge in an open channel corresponding to critical depth is
Zero
Minimum
Maximum
None of these
For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal
Ratio of inertial force to force due to viscosity
Ratio of inertial force to force due to gravitation
Ratio of inertial force to force due to surface tension
All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
For pipes, turbulent flow occurs when Reynolds number is
Less than 2000
Between 2000 and 4000
More than 4000
Less than 4000
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream
Keeps on increasing
Keeps on decreasing
Remain constant
May increase/decrease
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
Equal to
One-third
Two-third
Three-fourth
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be
Running full
Running free
Partially running full
Partially running free
The unit of kinematic viscosity in S. I. units is
N-m/s
N-s/m2
m2/s
N-m
Kinematic viscosity is dependent upon
Pressure
Distance
Density
Flow
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is
0.46
0.64
0.78
0.87
The critical depth meter is used to measure
Velocity of flow in an open channel
Depth of flow in an open channel
Hydraulic jump
Depth of channel
The kinematic viscosity is the
Ratio of absolute viscosity to the density of the liquid
Ratio of density of the liquid to the absolute viscosity
Product of absolute viscosity and density of the liquid
Product of absolute viscosity and mass of the liquid
Resultant pressure of the liquid in the case of an immersed body acts through
Centre of gravity
Centre of pressure
Metacentre
Centre of buoyancy
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than
Frictional force
Viscosity
Surface friction
All of the above
A flow in which the viscosity of fluid is dominating over the inertia force is called
Steady flow
Unsteady flow
Laminar flow
Turbulent flow