Hydraulics and Fluid Mechanics Questions

• A flow whose streamline is represented by a curve, is called
• Stoke is the unit of
• A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
• The vacuum pressure is always the negative gauge pressure.
• When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is
• The value of coefficient of discharge is __________ the value of coefficient of velocity.
• Turbulent flow takes place at high velocities.
• The ratio of the inertia force to the viscous force is called
• The pressure of a liquid measured with the help of a piezometer tube is
• If the depth of water in an open channel is greater than the critical depth, the flow is called
• A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.
• A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
• The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
• The total pressure on an immersed surface inclined at an angle θ with the liquid surface is
• The flow in a pipe or channel is said to be non-uniform when
• A venturiflume is used to measure
• The pressure measured with the help of a pressure gauge is called
• The velocity at which the flow changes from laminar flow to turbulent flow is called
• A flow is called hyper-sonic, if the Mach number is
• Reynold's number is the ratio of the inertia force to the