Hydraulics and Fluid Mechanics Questions

• The Bernoulli's equation is based on the assumption that
• The centre of buoyancy is the centre of area of the immersed body.
• A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.
• The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.
• The discharge through a siphon spillway is
• The centre of gravity of the volume of the liquid displaced is called
• In a free nappe,
• The maximum efficiency of transmission through a pipe is
• In a depressed nappe
• One litre of water occupies a volume of
• 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 per unit length is (where w = Specific weight of liquid, and H = Height of liquid)
• A manometer is used to measure
• The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
• The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)
• The weight per unit volume of a liquid at a standard temperature and pressure is called
• In one dimensional flow, the flow
• A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be
• A siphon is used to connect two reservoirs at different levels intervened by a high ridge.
• In open channels, the specific energy is the
• The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy 's coefficient of friction for pipe, and l = Length of pipe )