For the same terminal conditions and fitting size, the least friction loss is incurred in a/an
For the same terminal conditions and fitting size, the least friction loss is incurred in a/an
An isentropic process is the one, in which
An isentropic process is the one, in which
In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as :(where, 'δ' is the boundary layer thickness and 'x' is the distance from the leading edge in the direction of flow).
In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as :(where, 'δ' is the boundary layer thickness and 'x' is the distance from the leading edge in the direction of flow).
At low Reynolds number
At low Reynolds number
Fluid flow at increasing rate through a diverging pipe is an example of __________ flow.
Fluid flow at increasing rate through a diverging pipe is an example of __________ flow.
Which of the following is not concerned with the fluid-particle interaction?
Which of the following is not concerned with the fluid-particle interaction?
Check valves are used
Check valves are used
An ideal fluid is
An ideal fluid is
At high Reynolds number
At high Reynolds number
An ideal fluid is
An ideal fluid is
It is possible to integrate an automatic flow controller to a
It is possible to integrate an automatic flow controller to a
Boundary layer separation is characterised by one of the conditions given below, where 'Re' is the Reynolds number for the flow. Select the appropriate conditions.
Boundary layer separation is characterised by one of the conditions given below, where 'Re' is the Reynolds number for the flow. Select the appropriate conditions.
In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes
In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes
The capacity of a centrifugal pump Can be increased by increasing the
The capacity of a centrifugal pump Can be increased by increasing the
The capillary rise of mercury is maximum in glass tube of dia __________ mm.
The capillary rise of mercury is maximum in glass tube of dia __________ mm.
The continuity equation of fluid mechanics utilises the principle of conservation of
The continuity equation of fluid mechanics utilises the principle of conservation of
Which of the fluid forces are not considered in the Reynold's equation of flow?
Which of the fluid forces are not considered in the Reynold's equation of flow?
Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
A hydraulic accumulator comprises of
A hydraulic accumulator comprises of
Pressure co-efficient is the ratio of pressure forces to __________ forces.
Pressure co-efficient is the ratio of pressure forces to __________ forces.
Friction produced by the formation of wakes is called the __________ friction.
Friction produced by the formation of wakes is called the __________ friction.
Piezometric head is the sum of the __________ heads.
Piezometric head is the sum of the __________ heads.
What is the normal range of exit cone angle of a venturimeter?
What is the normal range of exit cone angle of a venturimeter?
An ideal nozzle design aims at
An ideal nozzle design aims at
Hydraulic radius is the ratio of
Hydraulic radius is the ratio of
Mass velocity is independent of temperature & pressure, when the flow is
Mass velocity is independent of temperature & pressure, when the flow is
Check in a centrifugal pump is
Check in a centrifugal pump is
The line of action of the buoyant force acts through the
The line of action of the buoyant force acts through the
Buckingham-π theorem states that in any physical problem including 'n' quantities having 'm' diamensions, the quantities can be arranged into __________ independent dimensionless parameters.
Buckingham-π theorem states that in any physical problem including 'n' quantities having 'm' diamensions, the quantities can be arranged into __________ independent dimensionless parameters.
The fluid jet discharging from a 2" diameter orifice has a diameter of 1.75" at its vena-contracta. The co-efficient of contraction is
The fluid jet discharging from a 2" diameter orifice has a diameter of 1.75" at its vena-contracta. The co-efficient of contraction is
What causes convective acceleration in fluid flow?
What causes convective acceleration in fluid flow?
The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the
The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the
In case of venturimeters, friction losses are about __________ percent of maximum velocity head.
In case of venturimeters, friction losses are about __________ percent of maximum velocity head.
Stoke's equation is valid in the Reynolds number range
Stoke's equation is valid in the Reynolds number range
A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ₀ = 10 KPa, is shared between flat parallel plates separated by a distance of 10⁻³ m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is
A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ₀ = 10 KPa, is shared between flat parallel plates separated by a distance of 10⁻³ m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is
The ratio of the hydraulic radius to the diameter of the channel, for maximum mean velocity of flow in a circular channel, in open channel flow is
The ratio of the hydraulic radius to the diameter of the channel, for maximum mean velocity of flow in a circular channel, in open channel flow is
A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
The head loss due to sudden contraction is proportional to
The head loss due to sudden contraction is proportional to
Check valve is used for __________ flow.
Check valve is used for __________ flow.
A globe valve is the most suitable for applications, in which
A globe valve is the most suitable for applications, in which
If 'x' is the depth of flow in an open channel of large width, then the hydraulic radius is equal to
If 'x' is the depth of flow in an open channel of large width, then the hydraulic radius is equal to
Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid
Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid
Capacity of a rotary gear pump can be varied by
Capacity of a rotary gear pump can be varied by
The pitot static tube does not measure the __________ pressure.
The pitot static tube does not measure the __________ pressure.
Experimental study of laminar fluid flow through a circular tube was conducted by
Experimental study of laminar fluid flow through a circular tube was conducted by
Cocks are used to control
Cocks are used to control
Erosion and pits formation on the impeller of a centrifugal pump may be due to
Erosion and pits formation on the impeller of a centrifugal pump may be due to
Gradually varying fluid flow is an example of __________ flow.
Gradually varying fluid flow is an example of __________ flow.
Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be __________ ft.
Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be __________ ft.
In a dry packed bed, the pressure drop will be changed by increasing the flow rate as
In a dry packed bed, the pressure drop will be changed by increasing the flow rate as
Identification of pipelines carrying different liquids and gases is done by the __________ of the pipe.
Identification of pipelines carrying different liquids and gases is done by the __________ of the pipe.
The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the
The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the
For flow of fluids through packed bed, the superficial velocity is
For flow of fluids through packed bed, the superficial velocity is
Most of the centrifugal pumps used in chemical plants are usually __________ driven.
Most of the centrifugal pumps used in chemical plants are usually __________ driven.
A Newtonion liquid (ρ = density, μ = viscosity) is flowing with velocity v in a tube of diameter 'D'. Let Δp be the pressure drop across the length 'L'. For a laminar flow, Δp is proportional to
A Newtonion liquid (ρ = density, μ = viscosity) is flowing with velocity v in a tube of diameter 'D'. Let Δp be the pressure drop across the length 'L'. For a laminar flow, Δp is proportional to
Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its
Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its
The fluid property, due to which, mercury does not wet the glass is
The fluid property, due to which, mercury does not wet the glass is
The vent valve provided in a liquid handling centrifugal pump is
The vent valve provided in a liquid handling centrifugal pump is
The buoyant force acting on a floating body is dependent on the
The buoyant force acting on a floating body is dependent on the
Actual lift of a pump is always less than the theoretical lift and is limited by the
Actual lift of a pump is always less than the theoretical lift and is limited by the
Centrifugal pump is normally classified on the basis of the
Centrifugal pump is normally classified on the basis of the
What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta?
What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta?
The pressure co-efficient is the ratio of pressure forces to __________ forces.
The pressure co-efficient is the ratio of pressure forces to __________ forces.
Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time't'. α = a co-efficient to be experimentally determined)?
Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time't'. α = a co-efficient to be experimentally determined)?
The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the
The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the
Fluid resistance to shear depends upon its
Fluid resistance to shear depends upon its
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 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
Gradually varied flow in open channel is a/an __________ flow.
Gradually varied flow in open channel is a/an __________ flow.
Buoyant force
Buoyant force
Boundary layer exists in flow
Boundary layer exists in flow
Choking in case of pipe flow means that a
Choking in case of pipe flow means that a
The frictional resistance in laminar flow does not depend on the
The frictional resistance in laminar flow does not depend on the
The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is
The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is
The contraction co-efficient for Borda's mouthpiece (for frictionless fluid) is
The contraction co-efficient for Borda's mouthpiece (for frictionless fluid) is
In case of turbulent flow of fluid through a circular pipe, the
In case of turbulent flow of fluid through a circular pipe, the
The flow of a liquid through tapering pipe at a constant rate is an example of __________ flow.
The flow of a liquid through tapering pipe at a constant rate is an example of __________ flow.
Sewage sludge is an example of the __________ fluid.
Sewage sludge is an example of the __________ fluid.
Cavitation can be prevented by
Cavitation can be prevented by
Manometers measure the __________ pressure.
Manometers measure the __________ pressure.
Centrifugal compressors compared to reciprocating compressors
Centrifugal compressors compared to reciprocating compressors
In case of laminar flow of fluid through a circular pipe, the
In case of laminar flow of fluid through a circular pipe, the
Normal depth in open channel flow is the depth of flow in the channel
Normal depth in open channel flow is the depth of flow in the channel
Pascal law is not applicable for a/an __________ fluid.
Pascal law is not applicable for a/an __________ fluid.
With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
Non-colloidal solution is an example of the __________ fluid.
Non-colloidal solution is an example of the __________ fluid.
A rotameter works on the principle of __________ pressure drop.
A rotameter works on the principle of __________ pressure drop.
The Reynolds number for an ideal fluid flow is
The Reynolds number for an ideal fluid flow is
What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides change?
What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides change?
Viscosity of water is about __________ times that of air at room temperature.
Viscosity of water is about __________ times that of air at room temperature.
Which of the following can be used to create a flow of gas, where no significant compression is required?
Which of the following can be used to create a flow of gas, where no significant compression is required?
The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as
The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as
Euler's equation of motion states, that at every point, the
Euler's equation of motion states, that at every point, the
A liquid is pumped at the rate of 600 litres using 1000 rpm. If the rpm is changed to 1100, the liquid pumped is __________ litres.
A liquid is pumped at the rate of 600 litres using 1000 rpm. If the rpm is changed to 1100, the liquid pumped is __________ litres.
Which of the following is dimensionless?
Which of the following is dimensionless?
Prandtl number is a measure of the
Prandtl number is a measure of the
Upto what value of 'Mach number', a fluid may be considered as incompressible?
Upto what value of 'Mach number', a fluid may be considered as incompressible?
The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm².
The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm².
The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by
The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by
In case of coutte flow, the fluid flow is between two large flat parallel plates with
In case of coutte flow, the fluid flow is between two large flat parallel plates with
