Related Questions
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The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called
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A one dimensional flow is one which
B. Is steady uniform flow
C. Takes place in straight lines
D. Involves zero transverse component of flow
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4
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is
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The tangential velocity of the water element having a free vortex is
A. Directly proportional to its distance from the centre
B. Inversely proportional to its distance from the centre
C. Directly proportional to its (distance)2 from the centre
D. Inversely proportional to its (distance)2 from the centre
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The units of dynamic or absolute viscosity are
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The loss of pressure head in case of laminar flow is proportional to
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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
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When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
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The atmospheric pressure with rise in altitude decreases
B. First slowly and then steeply
C. First steeply and then gradually
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The upper surface of a weir over which water flows is known is
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Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
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A flow through a long pipe at constant rate is called
B. Steady non-uniform flow
D. Unsteady non-uniform flow
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In a forced vortex, the velocity of flow everywhere within the fluid is
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The force of buoyancy is always __________ the weight of the liquid displaced by the body.
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The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by
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The specific weight of sea water is __________ that of pure water.
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The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
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When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
C. Positive gauge pressure
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If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm, the pressure at a depth of 50 m below the oil surface will be
A. 2 meters of water column
B. 3 meters of water column
C. 5 meters of water column
D. 6 meters of water Column
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An average value of coefficient of velocity is
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Gradually varied flow is
B. Non-steady non-uniform
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The total energy line lies over the hydraulic gradient line by an amount equal to the
C. Pressure head + velocity head
D. Pressure head - velocity head
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The ratio of absolute viscosity to mass density is known as
D. Coefficient of viscosity
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Metacentric height is the distance between the metacentre and
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The mercury does not wet the glass. This is due to the property of the liquid known as
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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
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Which of the following meters is not associated with viscosity?
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A structure, whose width is __________ the width of the channel, is called a flumed structure.
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Specific weight of sea water is more that of pure water because it contains
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The density of water is 1000 kg/m3 at