The weight per unit volume of a liquid at a standard temperature and pressure is called
The weight per unit volume of a liquid at a standard temperature and pressure is called
The volumetric change of the fluid caused by a resistance is known as
The volumetric change of the fluid caused by a resistance is known as
The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as
The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as
The ratio of the inertia force to the viscous force is called
The ratio of the inertia force to the viscous force is called
Poise is the unit of
Poise is the unit of
Multistage centrifugal pumps are used to
Multistage centrifugal pumps are used to
Cavitation is caused by
Cavitation is caused by
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to
An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
Indicator diagram of a reciprocating pump is a graph between
Indicator diagram of a reciprocating pump is a graph between
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.
In a centrifugal pump casing, the flow of water leaving the
In a centrifugal pump casing, the flow of water leaving the
The center of pressure of a surface subjected to fluid pressure is the point
The center of pressure of a surface subjected to fluid pressure is the point
Which of the following pump is successfully used for lifting water to the boilers?
Which of the following pump is successfully used for lifting water to the boilers?
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge
Property of a fluid by which its own molecules are attracted is called
Property of a fluid by which its own molecules are attracted is called
The variation in the volume of a liquid with the variation of pressure is called its
The variation in the volume of a liquid with the variation of pressure is called its
The velocity of jet of water traveling out of opening in a tank filled with water is proportional to
The velocity of jet of water traveling out of opening in a tank filled with water is proportional to
The flow in a pipe is turbulent when Reynold number is
The flow in a pipe is turbulent when Reynold number is
The divergent portion of a Venturimeter is made longer than convergent portion in order to
The divergent portion of a Venturimeter is made longer than convergent portion in order to
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is
Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be
Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be
The pressure less than atmospheric pressure is known as
The pressure less than atmospheric pressure is known as
In a reciprocating pump, air vessels are used to
In a reciprocating pump, air vessels are used to
In a centrifugal pump, the regulating valve is provided on the
In a centrifugal pump, the regulating valve is provided on the
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water
A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is
A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is
The maximum efficiency of transmission through a pipe is
The maximum efficiency of transmission through a pipe is
The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)
The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)
When the Mach number is between __________ the flow is called super-sonic flow.
When the Mach number is between __________ the flow is called super-sonic flow.
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)
The specific weight of water is 1000 kg/m3
The specific weight of water is 1000 kg/m3
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be
Density of water is maximum at
Density of water is maximum at
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
The hydraulic mean depth or the hydraulic radius is the ratio of
The hydraulic mean depth or the hydraulic radius is the ratio of
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.
The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)
The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)
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)
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)
The flow in a pipe is neither laminar nor turbulent when Reynold number is
The flow in a pipe is neither laminar nor turbulent when Reynold number is
Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as
Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as
The units of dynamic or absolute viscosity are
The units of dynamic or absolute viscosity are
Francis turbine is best suited for
Francis turbine is best suited for
A point, in a compressible flow where the velocity of fluid is zero, is called
A point, in a compressible flow where the velocity of fluid is zero, is called
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?
The pressure of fluid due to hammer blow is
The pressure of fluid due to hammer blow is
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as
The unit speed of the turbine runner is
The unit speed of the turbine runner is
The units of kinematic viscosity are
The units of kinematic viscosity are
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
Hydrometer is used to determine
Hydrometer is used to determine
Casting of a centrifugal pump is designed so as to minimize
Casting of a centrifugal pump is designed so as to minimize
The mass per unit volume of a liquid at a standard temperature and pressure is called
The mass per unit volume of a liquid at a standard temperature and pressure is called
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
The Newton's law of resistance is based on the assumption that the
The Newton's law of resistance is based on the assumption that the
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred
For small discharge at high pressure, following pump is preferred
For small discharge at high pressure, following pump is preferred
The number of buckets on the periphery of a Pelton wheel is given by
The number of buckets on the periphery of a Pelton wheel is given by
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is
Francis, Kaplan and propeller turbines fall under the category of
Francis, Kaplan and propeller turbines fall under the category of
The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)
The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)
Low specific speed of a pump implies it is
Low specific speed of a pump implies it is
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea?
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea?
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is
The absolute pressure is equal to
The absolute pressure is equal to
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is
Specific weight of water in S.I. units is equal to
Specific weight of water in S.I. units is equal to
The speed of a turbine runner is
The speed of a turbine runner is
The meatcentric height is the distance between the
The meatcentric height is the distance between the
Multistage centrifugal pumps are used to obtain
Multistage centrifugal pumps are used to obtain
The unit of surface tension is
The unit of surface tension is
Viscosity of water in comparison to mercury is
Viscosity of water in comparison to mercury is
The velocity at which the laminar flow stops, is known as
The velocity at which the laminar flow stops, is known as
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.
The buoyancy depends on
The buoyancy depends on
The angle of contact in case of a liquid depends upon
The angle of contact in case of a liquid depends upon
A flow is called super-sonic if the
A flow is called super-sonic if the
The discharge through a reaction turbine __________ with the increase in unit speed.
The discharge through a reaction turbine __________ with the increase in unit speed.
Mechanical efficiency of a centrifugal pump is the ratio of
Mechanical efficiency of a centrifugal pump is the ratio of
Axial flow pump is started with its delivery valve
Axial flow pump is started with its delivery valve
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be
According to fan laws, at constant pressure, the speed capacity and power vary
According to fan laws, at constant pressure, the speed capacity and power vary
The undershot water wheels are those in which
The undershot water wheels are those in which
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called
An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.
An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.
The value of mass density in kg-sec-V-m⁴ for water at 0°C is
The value of mass density in kg-sec-V-m⁴ for water at 0°C is
Liquids transmit pressure equally in all the directions. This is according to
Liquids transmit pressure equally in all the directions. This is according to
The force per unit length is the unit of
The force per unit length is the unit of
In a venturi-flume, the flow takes place at
In a venturi-flume, the flow takes place at
The specific weight of water in S.I. units is taken as
The specific weight of water in S.I. units is taken as
The Thomson's turbine is _________ reaction turbine.
The Thomson's turbine is _________ reaction turbine.
Euler's equation in the differential form for the motion of liquids is given by
Euler's equation in the differential form for the motion of liquids is given by
According to fan laws, for the fans having constant wheel diameters, the power demand varies
According to fan laws, for the fans having constant wheel diameters, the power demand varies
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is
For starting an axial flow pump, its delivery valve should be
For starting an axial flow pump, its delivery valve should be
Practical fluids
Practical fluids
Manometer is used to measure
Manometer is used to measure
A differential manometer is used to measure
A differential manometer is used to measure
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)
Reynold's number is the ratio of the inertia force to the
Reynold's number is the ratio of the inertia force to the
The Fourneyron turbine is _________ reaction turbine.
The Fourneyron turbine is _________ reaction turbine.
Runaway speed of a hydraulic turbine is
Runaway speed of a hydraulic turbine is
A fluid which obeys the Newton's law of viscosity is termed as
A fluid which obeys the Newton's law of viscosity is termed as
Overall efficiency of a centrifugal pump is the ratio of
Overall efficiency of a centrifugal pump is the ratio of
The normal stress in a fluid will be constant in all directions at a point only if
The normal stress in a fluid will be constant in all directions at a point only if
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies
The depth of the centre of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is
The depth of the centre of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is
Euler's dimensionless number relates the following
Euler's dimensionless number relates the following
The unit of viscosity is
The unit of viscosity is
Manometric head, in case of a centrifugal pump, is equal to
Manometric head, in case of a centrifugal pump, is equal to
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of
A pressure of 25 m of head of water is equal to
A pressure of 25 m of head of water is equal to
The increase of temperature results in
The increase of temperature results in
For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal
For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal
In order to measure the flow with a Venturimeter, it is installed in
In order to measure the flow with a Venturimeter, it is installed in
A manometer is used to measure
A manometer is used to measure
The discharge over a rectangular notch is
The discharge over a rectangular notch is
The hammer blow in pipes occurs when
The hammer blow in pipes occurs when
The shear stress-strain graph for a Newtonian fluid is a
The shear stress-strain graph for a Newtonian fluid is a
High specific speed of a pump implies it is
High specific speed of a pump implies it is
Piezometer is used to measure
Piezometer is used to measure
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to
A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
An impulse turbine is used for
An impulse turbine is used for
The speed ratio in case of Francis turbine varies from
The speed ratio in case of Francis turbine varies from
Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure.
Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure.
One liter of water occupies a volume of
One liter of water occupies a volume of
The loss of pressure head in case of laminar flow is proportional to
The loss of pressure head in case of laminar flow is proportional to
Unit of surface tension is
Unit of surface tension is
Dynamic viscosity of most of the gases with rise in temperature
Dynamic viscosity of most of the gases with rise in temperature
Dynamic viscosity of most of the liquids with rise in temperature
Dynamic viscosity of most of the liquids with rise in temperature
Hot wire anemometer is used to measure
Hot wire anemometer is used to measure
Medium specific speed of a pump implies it is
Medium specific speed of a pump implies it is
One poise is equal to
One poise is equal to
Dimensions of surface tension are
Dimensions of surface tension are
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is
The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is _______ of the jet velocity,
The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is _______ of the jet velocity,
One horsepower is equal to
One horsepower is equal to
One stoke is equal to
One stoke is equal to
The total energy line lies over the hydraulic gradient line by an amount equal to the
The total energy line lies over the hydraulic gradient line by an amount equal to the
Surface tension
Surface tension
A structure used to dam up a stream or river over which the water flows is called
A structure used to dam up a stream or river over which the water flows is called
The power developed by a turbine is (where H = Head of water under which the turbine is working)
The power developed by a turbine is (where H = Head of water under which the turbine is working)
The height of a water column equivalent to a pressure of 0.15 MPa is
The height of a water column equivalent to a pressure of 0.15 MPa is
The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)
The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)
In a reaction turbine, the draft tube is used
In a reaction turbine, the draft tube is used
The property of a fluid which enables it to resist tensile stress is known as
The property of a fluid which enables it to resist tensile stress is known as
Differential manometer is used to measure
Differential manometer is used to measure
Choose the correct relationship
Choose the correct relationship
The flow ratio in case of Francis turbine varies from
The flow ratio in case of Francis turbine varies from
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is
The pressure at a point 4 m below the free surface of water is
The pressure at a point 4 m below the free surface of water is
The flow rate in gear pump
The flow rate in gear pump
If no resistance is encountered by displacement, such a substance is known as
If no resistance is encountered by displacement, such a substance is known as
The maximum number of jets generally employed in impulse turbine without jet interference is
The maximum number of jets generally employed in impulse turbine without jet interference is
In reaction turbine, draft tube is used
In reaction turbine, draft tube is used
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be
The centre of gravity of the volume of the liquid displaced is called
The centre of gravity of the volume of the liquid displaced is called
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between
The critical depth meter is used to measure
The critical depth meter is used to measure
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is
The hydraulic efficiency of an impulse turbine is the
The hydraulic efficiency of an impulse turbine is the
Which of the following is not a reaction turbine?
Which of the following is not a reaction turbine?
An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
In a forced vortex, the velocity of flow everywhere within the fluid is
In a forced vortex, the velocity of flow everywhere within the fluid is
The bulk modulus of elasticity with increase in pressure
The bulk modulus of elasticity with increase in pressure
Flow occurring in a pipeline when a valve is being opened is
Flow occurring in a pipeline when a valve is being opened is
The shear stress between the two liquid layers is __________ proportional to the distance between two layers.
The shear stress between the two liquid layers is __________ proportional to the distance between two layers.
General energy equation holds for
General energy equation holds for
When a body is placed over a liquid, it will sink down if
When a body is placed over a liquid, it will sink down if
In an immersed body, centre of pressure is
In an immersed body, centre of pressure is
According to fan laws, at constant speed and capacity, the pressure and power vary
According to fan laws, at constant speed and capacity, the pressure and power vary
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of
Maximum impulse will be developed in hydraulic ram when
Maximum impulse will be developed in hydraulic ram when
The pressure at a point in a fluid will not be same in all the directions when the fluid is
The pressure at a point in a fluid will not be same in all the directions when the fluid is
Barometer is used to measure
Barometer is used to measure
If the net positive suction head (NPSH) requirement for the pump is not satisfied, then
If the net positive suction head (NPSH) requirement for the pump is not satisfied, then
The rise or depression of liquid in a tube due to surface tension will increase in size of tube will
The rise or depression of liquid in a tube due to surface tension will increase in size of tube will
A body floats in stable equilibrium
A body floats in stable equilibrium
Centrifugal pump is started with its delivery valve
Centrifugal pump is started with its delivery valve
A venturi-flume is used to measure
A venturi-flume is used to measure
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)
