The property by virtue of which a liquid opposes relative motion between its different layers is called
The property by virtue of which a liquid opposes relative motion between its different layers is called
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is
A double overhung Pelton wheel has
A double overhung Pelton wheel has
Operation of McLeod gauge used for low pressure measurement is based on the principle of
Operation of McLeod gauge used for low pressure measurement is based on the principle of
Which of the following instrument can be used for measuring speed of an aeroplane?
Which of the following instrument can be used for measuring speed of an aeroplane?
When a body floating in a liquid, is displaced slightly, it oscillates about
When a body floating in a liquid, is displaced slightly, it oscillates about
The viscosity of water is __________ than that of mercury.
The viscosity of water is __________ than that of mercury.
The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.
The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.
Normal depth in open channel flow is the depth of flow corresponding to
Normal depth in open channel flow is the depth of flow corresponding to
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is
The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)
The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is
The region between the separation streamline and the boundary surface of the solid body is known as
The region between the separation streamline and the boundary surface of the solid body is known as
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity
When a body is placed over a liquid, it will float if
When a body is placed over a liquid, it will float if
Non uniform flow occurs when
Non uniform flow occurs when
The speed of sound in a ideal gas varies directly as it’s
The speed of sound in a ideal gas varies directly as it’s
The maximum number of jets, generally, employed in an impulse turbine without jet interference are
The maximum number of jets, generally, employed in an impulse turbine without jet interference are
In a centrifugal pump casing, the flow of water leaving the impeller, is
In a centrifugal pump casing, the flow of water leaving the impeller, is
A flow whose streamline is represented by a curve, is called
A flow whose streamline is represented by a curve, is called
Impulse turbine is generally fitted
Impulse turbine is generally fitted
Which of the following is an example of laminar flow?
Which of the following is an example of laminar flow?
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to
Which of the following pump is successfully used for lifting water to the turbines?
Which of the following pump is successfully used for lifting water to the turbines?
The sheet of water flowing over a notch or a weir is known as
The sheet of water flowing over a notch or a weir is known as
The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
The density of water is 1000 kg/m3 at
The density of water is 1000 kg/m3 at
The force present in a moving liquid is
The force present in a moving liquid is
The normal stress is same in all directions at a point in a fluid
The normal stress is same in all directions at a point in a fluid
Steady flow occurs when
Steady flow occurs when
According to Bernoulli's equation for steady ideal fluid flow
According to Bernoulli's equation for steady ideal fluid flow
The pressure in Pascal’s at a depth of 1 m below the free surface of a body of water will be equal to
The pressure in Pascal’s at a depth of 1 m below the free surface of a body of water will be equal to
Uniform flow occurs when
Uniform flow occurs when
The coefficient of viscosity may be determined by
The coefficient of viscosity may be determined by
In an inward flow reaction turbine
In an inward flow reaction turbine
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 , the horse power required will be
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 , the horse power required will be
The kinematic viscosity is the
The kinematic viscosity is the
The working of which of the following hydraulic units is based on Pascal's law?
The working of which of the following hydraulic units is based on Pascal's law?
Meta-centric height is given as the distance between
Meta-centric height is given as the distance between
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.
The difference of pressure between the inside and outside of a liquid drop is
The difference of pressure between the inside and outside of a liquid drop is
The Cipoletti weir is a __________ weir.
The Cipoletti weir is a __________ weir.
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
When a liquid is flowing through a pipe, the velocity of the liquid is
When a liquid is flowing through a pipe, the velocity of the liquid is
The surface tension of mercury at normal temperature compared to that of water is
The surface tension of mercury at normal temperature compared to that of water is
A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called
A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called
Air vessels in reciprocating pump are used to
Air vessels in reciprocating pump are used to
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than
The viscosity of water at 20°C is
The viscosity of water at 20°C is
The buoyancy depends upon the
The buoyancy depends upon the
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by
The jet ratio is defined as the ratio of the
The jet ratio is defined as the ratio of the
Reynold's number is the ratio of inertia force to
Reynold's number is the ratio of inertia force to
The horizontal component of buoyant force is
The horizontal component of buoyant force is
A large Reynold number is indication of
A large Reynold number is indication of
The optimum value of vane exit angle for a centrifugal pump impeller is
The optimum value of vane exit angle for a centrifugal pump impeller is
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to bring the liquid level from H1 to H2 will be
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to bring the liquid level from H1 to H2 will be
Power required to drive a centrifugal pump is directly proportional to _________ of its impeller.
Power required to drive a centrifugal pump is directly proportional to _________ of its impeller.
In an outward flow reaction turbine
In an outward flow reaction turbine
Pressure intensifier increases the pressure in proportion to
Pressure intensifier increases the pressure in proportion to
A hydraulic ram is a device used to
A hydraulic ram is a device used to
A hydraulic press is a device used
A hydraulic press is a device used
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)
Which of the following turbine is preferred for 0 to 25 m head of water?
Which of the following turbine is preferred for 0 to 25 m head of water?
The specific speed (Ns) of a centrifugal pump is given by
The specific speed (Ns) of a centrifugal pump is given by
The unit of dynamic viscosity in S.I. units is
The unit of dynamic viscosity in S.I. units is
The product of mass and acceleration of flowing liquid is called
The product of mass and acceleration of flowing liquid is called
The angle of taper on draft tube is
The angle of taper on draft tube is
Which of the following pump is successfully used for lifting water from deep wells?
Which of the following pump is successfully used for lifting water from deep wells?
Puck up the wrong statement about centrifugal pump
Puck up the wrong statement about centrifugal pump
According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.
According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.
Froude's number is the ratio of inertia force to
Froude's number is the ratio of inertia force to
The tangential velocity of the water element having a free vortex is
The tangential velocity of the water element having a free vortex is
True one-dimensional flow occurs when
True one-dimensional flow occurs when
A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.
A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.
The flow of water through the hole in the bottom of a wash basin is an example of
The flow of water through the hole in the bottom of a wash basin is an example of
A Francis turbine is used when the available head of water is
A Francis turbine is used when the available head of water is
The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)
The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
The line of action of the buoyant force acts through the
The line of action of the buoyant force acts through the
A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by
A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by
Which place in hydraulic turbine is most susceptible for cavitations?
Which place in hydraulic turbine is most susceptible for cavitations?
The flow ratio of Francis turbine is defined as the ratio of the
The flow ratio of Francis turbine is defined as the ratio of the
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)
Surface tension has the units of
Surface tension has the units of
Fluid is a substance that
Fluid is a substance that
Which of the following statement is correct as regard to water wheels?
Which of the following statement is correct as regard to water wheels?
The flow in a pipe or channel is said to be non-uniform when
The flow in a pipe or channel is said to be non-uniform when
The magnitude of water hammer depends upon the
The magnitude of water hammer depends upon the
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is
Motion of a liquid in a volute casing of a centrifugal pump is an example of
Motion of a liquid in a volute casing of a centrifugal pump is an example of
