In open channels, the specific energy is the
In open channels, the specific energy is the
The dynamic viscosity of the liquid __________ with rise in temperature.
The dynamic viscosity of the liquid __________ with rise in temperature.
Which of the following statement is correct?
Which of the following statement is correct?
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is
A pitot tube is used to measure the
A pitot tube is used to measure the
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
In centrifugal pumps, maximum efficiency is obtained when the blades are
In centrifugal pumps, maximum efficiency is obtained when the blades are
Which of the following statement is correct?
Which of the following statement is correct?
To avoid an interruption in the flow of a siphon, an air vessel is provided
To avoid an interruption in the flow of a siphon, an air vessel is provided
A flow in which __________ force is dominating over the viscosity is called turbulent flow.
A flow in which __________ force is dominating over the viscosity is called turbulent flow.
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.
A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water?
A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water?
The velocity corresponding to Reynold number of 2800, is called
The velocity corresponding to Reynold number of 2800, is called
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.
The process of diffusion of one liquid into the other through a semi permeable membrane is called
The process of diffusion of one liquid into the other through a semi permeable membrane is called
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will
Rotameter is a device used to measure
Rotameter is a device used to measure
In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
The liquid used in manometers should have
The liquid used in manometers should have
According to fan laws, for fans having constant wheel diameter, the pressure varies
According to fan laws, for fans having constant wheel diameter, the pressure varies
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is
Choose the wrong statement
Choose the wrong statement
One cubic metre of water weighs
One cubic metre of water weighs
Working principle of dead weight pressure gauge tester is based on
Working principle of dead weight pressure gauge tester is based on
A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
The line of action of the buoyant force acts through the Centroid of the
The line of action of the buoyant force acts through the Centroid of the
Braking jet in an impulse turbine is used
Braking jet in an impulse turbine is used
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.
A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
Which of the following pump is suitable for small discharge and high heads?
Which of the following pump is suitable for small discharge and high heads?
Which of the following statement is correct?
Which of the following statement is correct?
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)
The atmospheric pressure at sea level is
The atmospheric pressure at sea level is
Rain drops are spherical because of
Rain drops are spherical because of
The resultant upward pressure of the fluid on an immersed body is called
The resultant upward pressure of the fluid on an immersed body is called
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be
Surface energy per unit area of a surface is numerically equal to
Surface energy per unit area of a surface is numerically equal to
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
Metacentre is the point of intersection of
Metacentre is the point of intersection of
A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.
A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.
For pipes, laminar flow occurs when Reynolds number is
For pipes, laminar flow occurs when Reynolds number is
The stress-strain relation of the Newtonian fluid is
The stress-strain relation of the Newtonian fluid is
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)
Coefficient of resistance is the ratio of
Coefficient of resistance is the ratio of
A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used?
A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used?
The hydraulic mean depth for a circular pipe of diameter (d) is
The hydraulic mean depth for a circular pipe of diameter (d) is
In an isothermal atmosphere, the pressure
In an isothermal atmosphere, the pressure
Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)
Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)
The purpose of a surge tank is
The purpose of a surge tank is
The overall efficiency of a reaction turbine is the ratio of
The overall efficiency of a reaction turbine is the ratio of
The Bernoulli's equation is based on the assumption that
The Bernoulli's equation is based on the assumption that
Select the wrong statement
Select the wrong statement
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).
Which of the following meters is not associated with viscosity?
Which of the following meters is not associated with viscosity?
Which of the following is the unit of kinematic viscosity?
Which of the following is the unit of kinematic viscosity?
The volume of a fluid __________ as the pressure increases.
The volume of a fluid __________ as the pressure increases.
The specific speed of turbine is defined as the speed of a unit
The specific speed of turbine is defined as the speed of a unit
Choose the wrong statement
Choose the wrong statement
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)
Center of buoyancy is the
Center of buoyancy is the
The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)
The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)
Bernoulli equation deals with the law of conservation of
Bernoulli equation deals with the law of conservation of
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)
The center of gravity of the volume of the liquid displaced by an immersed body is called
The center of gravity of the volume of the liquid displaced by an immersed body is called
Mercury does not wet glass. This is due to property of liquid known as
Mercury does not wet glass. This is due to property of liquid known as
According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to
According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is
The dynamic viscosity of gases __________ with rise in temperature.
The dynamic viscosity of gases __________ with rise in temperature.
The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)
The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
Choose the wrong statement
Choose the wrong statement
The Euler's equation for the motion of liquids is based upon the assumption that
The Euler's equation for the motion of liquids is based upon the assumption that
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.
A fluid is said to be ideal, if it is
A fluid is said to be ideal, if it is
Choose the wrong statement
Choose the wrong statement
The length of a liquid stream while flowing over a weir __________ at the ends of the sill.
The length of a liquid stream while flowing over a weir __________ at the ends of the sill.
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called
The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
Bulk modulus of a fluid __________ as the pressure increases.
Bulk modulus of a fluid __________ as the pressure increases.
The mercury does not wet the glass. This is due to the property of the liquid known as
The mercury does not wet the glass. This is due to the property of the liquid known as
For pipes, turbulent flow occurs when Reynolds number is
For pipes, turbulent flow occurs when Reynolds number is
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)
The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) is
The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) is
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)
Choose the wrong statement
Choose the wrong statement
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is
The pressure measured with the help of a pressure gauge is called
The pressure measured with the help of a pressure gauge is called
An orifice is said to be large, if
An orifice is said to be large, if
