Related Questions
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The top of the weir over which the water flows is known as
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A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if
A. Length of both the pipes is same
B. Diameter of both the pipes is same
C. Loss of head and discharge of both the pipes is same
D. Loss of head and velocity of flow in both the pipes is same
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4
Falling drops of water become spheres due to the property of
A. Surface tension of water
B. Compressibility of water
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An orifice is said to be large, if
A. The size of orifice is large
B. The velocity of flow is large
C. The available head of liquid is more than 5 times the height of orifice
D. The available head of liquid is less than 5 times the height of orifice
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4
The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to
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A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
A. It is easier to see through the glass tube
B. Glass tube is cheaper than a metallic tube
C. It is not possible to conduct this experiment with any other tube
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4
The atmospheric pressure with rise in altitude decreases
B. First slowly and then steeply
C. First steeply and then gradually
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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.
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The viscosity of water is __________ than that of mercury.
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The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
A. The bodies A and B have equal stability
B. The body A is more stable than body B
C. The body B is more stable than body A
D. The bodies A and B are unstable
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If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be
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The discharge through a channel of trapezoidal section is maximum when
A. Width of channel at the top is equal to twice the width at the bottom
B. Depth of channel is equal to the width at the bottom
C. The sloping side is equal to half the width at the top
D. The sloping side is equal to the width at the bottom
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The intensity of pressure on an immersed surface __________ with the increase in depth.
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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
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The hydraulic mean depth for a circular pipe of diameter (d) is
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Reynold's number is the ratio of inertia force to
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Liquids
B. Occupy definite volume
C. Are not affected by change in pressure and temperature
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In case of flow through parallel pipes,
A. The head loss for all the pipes is same
B. The total discharge is equal to the sum of discharges in the various pipes
C. The total head loss is the sum of head losses in the various pipes
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The velocity corresponding to Reynold number of 2800, is called
C. Lower critical velocity
D. Higher critical velocity
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According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2where m is equal to
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In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
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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.
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The value of mass density in kg-sec-V-m⁴ for water at 0°C is
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The pressure at a point 4 m below the free surface of water is
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The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
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Free surface of a liquid tends to contract to the smallest possible area due to force of
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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
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Select the correct statement
A. Weber's number is the ratio of inertia force to elastic force.
B. Weber's number is the ratio of gravity force to surface tension force.
C. Weber's number is the ratio of viscous force to pressure force.
D. Weber's number is the ratio of inertia force to surface tension force.
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The Reynold's number of a ship is __________ to its velocity and length.
B. Inversely proportional
C. Square root of velocity
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The coefficient of venturi-flume, generally, lies between