Q.1
A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation?
Q.2
The pressure head on sudden contraction in a horizontal pipe is converted into the __________ head.
Q.3
A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m³ ) is to be fluidised by water (density 1000 kg/m³ ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is
Q.4
A pressure of 10 m head of water is equivalent to __________ kN/m².
Q.5
Differential manometer measures the
Q.6
Horsepower requirement for given pump capacity depends upon the
Q.7
Working of a __________ pump characterises mixed flow.
Q.8
The co-efficient of drag and lift for an incompressible fluid depends on the
Q.9
__________ flow means the flow of incompressible fluid with no shear.
Q.10
Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible?
Q.11
The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid.
Q.12
Enamels and paints are generally __________ fluid.
Q.13
Major loss in sudden contraction in pipe flow is due to
Q.14
The Prandtl pitot tube measures the
Q.15
Viscosity of water at 40°C lies in the range of
Q.16
Which of the following conditions must be satisfied for lift force to be developed?
Q.17
Power number is the ratio of
Q.18
Prandtl mixing length is
Q.19
Which is the correct relationship for a centrifugal pump? (where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm)
Q.20
Purpose of air lift pump is to
Q.21
Pressure gradient in the pipe flow is influenced by the
Q.22
For the same flow rate of a fluid, the pressure drop is the least for
Q.23
Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the
Q.24
Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an
Q.25
Pick out the correct statement.
Q.26
Pipes having diameter 14 inches or more are designated by their
Q.27
For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to
Q.28
Unsteady uniform flow is represented by flow through a/an
Q.29
Unsteady non-uniform flow is represented by flow through a/an
Q.30
A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by
Q.31
In case of supersonic flow of a fluid through pipeline, the 'Mach number' is
Q.32
Plunger pumps are used for
Q.33
Bernoull's equation does not apply to the functioning of a/an
Q.34
For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance 'd' measured from the wall of the pipe and the friction velocity 'v', and it follows a __________ relationship.
Q.35
The head developed by a centrifugal pump is largely determined by the
Q.36
Propellers are
Q.37
With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the
Q.38
The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is
Q.39
Which of the following is an undesirable property of a manometric liquid?
Q.40
Pick out the wrong statement.
Q.41
Steady uniform flow is represented by flow through a/an
Q.42
Potential flow is the flow of
Q.43
Cavitation occurs in a centrifugal pump when the suction pressure is
Q.44
Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.
Q.45
In which of the following cases, it is possible for flow to occur from low pressure to high pressure?
Q.46
The velocity profile for turbulent flow through a closed conduit is
Q.47
Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a
Q.48
A fluid element has a velocity V = -y² . xi + 2yx² . j. The motion at (x, y) = (l/√2, 1) is
Q.49
The velocity for subsonic flow in a pipeline
Q.50
What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5)?
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