Bernoulli equation deals with the law of conservation of
Mass
Momentum
Energy
Work
Correct Answer :
C. Energy
Related Questions
One poise is equal to
0.1 N-s/m2
1 N-s/m2
10 N-s/m2
100 N-s/m2
Pitot tube is used for measurement of
Pressure
Flow
Velocity
Discharge
Select the correct statement
Local atmospheric pressure depends upon elevation of locality only
Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
Local atmospheric pressure is always below standard atmospheric pressure
A barometer reads the difference between local and standard atmospheric pressure
Pressure of the order of 10 torr can be measured by
Bourdon tube
Pirani Gauge
Micro-manometer
Lonisation gauge
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if
The area is horizontal
The area is vertical
The area is inclined
All of the above
The force per unit length is the unit of
Surface tension
Compressibility
Capillarity
Viscosity
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
Which of the following meters is not associated with viscosity?
Red wood
Say bolt
Engler
Orsat
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
Two pipe systems can be said to be equivalent, when the following quantities are same
Friction loss and flow
Length and diameter
Flow and length
Friction factor and diameter
Bulk modulus of a fluid is the ratio of
Shear stress to shear strain
Increase in volume to the viscosity of fluid
Increase in pressure to the volumetric strain
Critical velocity to the viscosity of fluid
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)
p/sinα
2p/sinα
p/2sinα
2p/sin (α/2)
General energy equation holds for
Steady flow
Turbulent flow
Laminar flow
Non-uniform flow
Non uniform flow occurs when
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
Velocity, depth, pressure, etc. change from point to point in the fluid flow.
The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane
A metal with specific gravity of a floating in a fluid of same specific gravity a will
Sink to bottom
Float over fluid
Partly immersed
Be fully immersed with top surface at fluid surface
The buoyancy depends on
Mass of liquid displaced
Viscosity of the liquid
Pressure of the liquid displaced
Depth of immersion
The velocity at which the laminar flow stops, is known as
Velocity of approach
Lower critical velocity
Higher critical velocity
None of these
Cavitation will begin when
The pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
Pressure becomes more than critical pressure
Flow is increased
Pressure is increased
Capillary action is due to the
Surface tension
Cohesion of the liquid
Adhesion of the liquid molecules and the molecules on the surface of a solid
All of the above
For measuring flow by a Venturimeter, if should be installed in
Vertical line
Horizontal line
Inclined line with flow downward
In any direction and in any location
In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
Less than
More than
Equal to
None of these
The flow in which conditions do not change with time at any point, is known as
One dimensional flow
Uniform flow
Steady flow
Turbulent flow
Two dimensional flows occurs when
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
A nozzle is generally made of
Cylindrical shape
Convergent shape
Divergent shape
Convergent-divergent shape
The horizontal component of buoyant force is
Negligible
Same as buoyant force
Zero
None of the above
A nozzle placed at the end of a water pipe line discharges water at a
Low pressure
High pressure
Low velocity
High velocity
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
Double
Four times
Eight times
Sixteen times
In a forced vortex, the velocity of flow everywhere within the fluid is
Maximum
Minimum
Zero
Nonzero finite
Euler's number is the ratio of __________ force to pressure force.
Inertia
Gravity
Viscous
None of these
The buoyancy depends upon the
Weight of the liquid displaced
Pressure with which the liquid is displaced
Viscosity of the liquid
Compressibility of the liquid