Test: Hydraulics & Fluid Mechanics - 5 - Civil Engineering (CE) MCQ
25 Questions MCQ Test - Test: Hydraulics & Fluid Mechanics - 5
The velocity corresponding to Reynold number of 2000 is called
The specific weight of water in S.I. units is taken as
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The flow in a pipe is laminar, when Reynold number is less than 2000.
The power transmitted through the pipe is maximum when the head lost due to friction is equal to
The specific weight of sea water is __________ that of pure water.
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.
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 most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
A flow is called sub-sonic, if the Mach number is
The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
The flow in a pipe is neither laminar nor turbulent when Reynold number is
The intensity of pressure on an immersed surface __________ with the increase in depth.
According to Pascal's law, the intensity of pressure at any point in a fluid at rest is the same in all directions.
The ratio of the inertia force to the surface tension force is called Weber's number.
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
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.
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
The total energy line lies over the centre line of the pipe by an amount equal to
A piezometer tube is used only for measuring
The flow in a pipe is turbulent when Reynold number is
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
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