Hydraulics and Fluid Mechanics Questions

• According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to
• If the coefficient of discharge is 0.6, then the discharge over a right angled notch is
• The point at which the resultant pressure on an immersed surface acts, is known as
• The factional resistance of a pipe varies approximately with __________ of the liquid.
• A flow through a long pipe at decreasing rate is called __________ uniform flow.
• The total energy of a liquid particle in motion is equal to
• The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)
• The hydraulic gradient line is always parallel to the centre line of the pipe.
• The volume of a fluid __________ as the pressure increases.
• A differential manometer is used to measure
• The surface tension of mercury at normal temperature is __________ that of water.
• The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.
• When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.
• Coefficient of velocity is defined as the ratio of
• A flow is called sonic, if the Mach number is unity.
• The property of a liquid which controls its rate of flow is called viscosity.
• An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,
• 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?
• An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
• In case of flow through parallel pipes,