Buoyant force is
Buoyant force is
Specific weight of sea water is more that of pure water because it contains
Specific weight of sea water is more that of pure water because it contains
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of
In a centrifugal pump, the liquid enters the pump
In a centrifugal pump, the liquid enters the pump
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
An open vessel of water is accelerated up an inclined plane. The free water surface will
An open vessel of water is accelerated up an inclined plane. The free water surface will
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.
A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called
A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called
The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)
The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)
Dynamic similarity is said to exist between the model and the prototype, if both of them
Dynamic similarity is said to exist between the model and the prototype, if both of them
The cavitation in reaction turbines is avoided, to a great extent by
The cavitation in reaction turbines is avoided, to a great extent by
A flow through a long pipe at decreasing rate is called __________ uniform flow.
A flow through a long pipe at decreasing rate is called __________ uniform flow.
Choose the wrong statement. Alcohol is used in manometer, because
Choose the wrong statement. Alcohol is used in manometer, because
Pressure of the order of 10" torr can be measured by
Pressure of the order of 10" torr can be measured by
When the Venturimeter is inclined, then for a given flow it will show __________ reading.
When the Venturimeter is inclined, then for a given flow it will show __________ reading.
Resultant pressure of the liquid in the case of an immersed body acts through
Resultant pressure of the liquid in the case of an immersed body acts through
Which of the following statement is wrong?
Which of the following statement is wrong?
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.
A perfect gas
A perfect gas
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
Geometric similarity is said to exist between the model and the prototype, if both of them
Geometric similarity is said to exist between the model and the prototype, if both of them
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is
Water is a __________ fluid.
Water is a __________ fluid.
The specific speed of a hydraulic turbine depends upon
The specific speed of a hydraulic turbine depends upon
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is
Which of the following statement is wrong?
Which of the following statement is wrong?
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
A notch is used to measure __________ of liquids.
A notch is used to measure __________ of liquids.
In one dimensional flow, the flow
In one dimensional flow, the flow
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is
A channel is said to be of most economical cross-section, if
A channel is said to be of most economical cross-section, if
The hydraulic efficiency of a reaction turbine, is the ratio of
The hydraulic efficiency of a reaction turbine, is the ratio of
The force of buoyancy is always __________ the weight of the liquid displaced by the body.
The force of buoyancy is always __________ the weight of the liquid displaced by the body.
The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
Free surface of a liquid tends to contract to the smallest possible area due to force of
Free surface of a liquid tends to contract to the smallest possible area due to force of
The resultant of all normal pressures acts
The resultant of all normal pressures acts
The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)
The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)
The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called
The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called
Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?
Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?
The runaway speed of a hydraulic turbine is the speed
The runaway speed of a hydraulic turbine is the speed
For 450 m head of water, _________ shall be used.
For 450 m head of water, _________ shall be used.
Newton's law of viscosity is a relationship between
Newton's law of viscosity is a relationship between
A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if
A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if
Specific speed for reaction turbines ranges from
Specific speed for reaction turbines ranges from
The surface tension of mercury at normal temperature is __________ that of water.
The surface tension of mercury at normal temperature is __________ that of water.
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
Select the correct statement
Select the correct statement
For a floating body to be in equilibrium
For a floating body to be in equilibrium
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.
When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.
When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.
For measuring flow by a Venturimeter, if should be installed in
For measuring flow by a Venturimeter, if should be installed in
The intensity of pressure at any point, in a liquid, is
The intensity of pressure at any point, in a liquid, is
The highest efficiency is obtained with a channel of __________ section.
The highest efficiency is obtained with a channel of __________ section.
The discharge in an open channel corresponding to critical depth is
The discharge in an open channel corresponding to critical depth is
According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary
According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary
Two pipe systems can be said to be equivalent, when the following quantities are same
Two pipe systems can be said to be equivalent, when the following quantities are same
If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.
If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.
A turbine pump is basically a centrifugal pump equipped additionally with
A turbine pump is basically a centrifugal pump equipped additionally with
Flow of water in a pipe about 3 meters in diameter can be measured by
Flow of water in a pipe about 3 meters in diameter can be measured by
Coefficient of velocity is defined as the ratio of
Coefficient of velocity is defined as the ratio of
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
The point at which the resultant pressure on an immersed surface acts, is known as
The point at which the resultant pressure on an immersed surface acts, is known as
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
Any change in load is adjusted by adjusting following parameter on turbine
Any change in load is adjusted by adjusting following parameter on turbine
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
Kinematic similarity is said to exist between the model and the prototype, if both of them
Kinematic similarity is said to exist between the model and the prototype, if both of them
The maximum discharge over a broad crested weir is
The maximum discharge over a broad crested weir is
Alcohol is used in manometers because
Alcohol is used in manometers because
Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.
The specific weight of sea water is __________ that of pure water.
The specific weight of sea water is __________ that of pure water.
The flow which neglects changes in a transverse direction is known as
The flow which neglects changes in a transverse direction is known as
A flow in which the viscosity of fluid is dominating over the inertia force is called
A flow in which the viscosity of fluid is dominating over the inertia force is called
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
The ratio of the inertia force to the elastic force is called
The ratio of the inertia force to the elastic force is called
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is
A Pelton wheel is
A Pelton wheel is
The factional resistance of a pipe varies approximately with __________ of the liquid.
The factional resistance of a pipe varies approximately with __________ of the liquid.
In order to avoid cavitation in centrifugal pumps
In order to avoid cavitation in centrifugal pumps
Bulk modulus of a fluid is the ratio of
Bulk modulus of a fluid is the ratio of
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.
The pressure of air __________ with the increase of height from the surface of the earth.
The pressure of air __________ with the increase of height from the surface of the earth.
For a floating body to be in stable equilibrium, its metacentre should be
For a floating body to be in stable equilibrium, its metacentre should be
Mercury is often used in barometer because
Mercury is often used in barometer because
Fluid is a substance which offers no resistance to change of
Fluid is a substance which offers no resistance to change of
The power transmitted through the pipe is maximum when the head lost due to friction is equal to
The power transmitted through the pipe is maximum when the head lost due to friction is equal to
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.
Water is _________ liquid.
Water is _________ liquid.
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
Select the correct statement
Select the correct statement
The stability of a dam is checked for
The stability of a dam is checked for
In a depressed nappe
In a depressed nappe
For centrifugal pump impeller, the maximum value of the vane exit angle is
For centrifugal pump impeller, the maximum value of the vane exit angle is
The Francis formula for the discharge over Cipoletti weir is
The Francis formula for the discharge over Cipoletti weir is
The discharge through a reaction turbine with increase in unit speed
The discharge through a reaction turbine with increase in unit speed
The ratio of the inertia force to the __________ is called Euler's number.
The ratio of the inertia force to the __________ is called Euler's number.
