The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.
One dimensional flow implies
Power required for mixing Newtonion fluids is a function of the
Propellers are
The discharge through a semi-circular weir varies as (where, H = Head of liquid.)
Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a
In case of coutte flow, the fluid flow is between two large flat parallel plates with
The co-efficient of discharge of an orificemeter is a function of
In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?
Multistage compressors are used in industry, because they
The hydrodynamic and thermal boundary layers will merge, when
Critical velocity in a pipe flow
The inherent characteristic of an equal percentage valve relating flow rate 'q' with valve stem movement 'x' are described by the equation
Vena-contracta formed during flow of a liquid through an orificemeter has
Purpose of relief valve in a reciprocating pump is to
Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
Pick out the wrong statement.
Select the correct statement.
A pipe is defined as 'hydraulically smooth', if the friction factor
What is the maximum theoretical suction lift (metres) of a reciprocating pump ?
The terminal velocity of a particle moving through a fluid varies as dpn. The value of n is equal to __________ in Stoke's law regime.
The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is
In case of a __________ the energy of flow is considerably decreased downstream of the machine.
Poise is converted into stoke by
As per Newton's law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to(where, μ = fluid viscosity)
The nominal size of a hose pipe is specified by its
If the head over the triangular notch is doubled, the discharge will increase by __________ times.
The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is
The momentum correction factor for the velocity distribution of laminar flow is
In case of turbulent flow of fluid through a circular pipe, the
A Pitot tube indicates 5 cm of water (manometer) when it is being used for measuring velocity of air. The velocity of air in m/sec is
Delivery of insufficient quantity of liquid by a pump may be caused by
Function of air vessel provided in a reciprocating pump is to
The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge)
Fanning friction factor for laminar flow of fluid in a circular pipe is
The unit of dynamic viscosity in SI unit is
With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop fo __________ fluid.
Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.
In continuous fluidisation
Hydraulic radius is the ratio of
Transition from laminar flow to turbulent flow is aided by the
Friction factor for a hydraulically smooth pipe at NRe =is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will
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.
For the same flow rate of a fluid, the pressure drop is the least for
The valve commonly used in pipes larger thandia is a
For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is
Quicksand is an example of a __________ fluid.
Fluid resistance to shear depends upon its
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