Q. 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.

View solution

Q. Select the correct statement

View solution

Q. The specific weight of sea water is __________ that of pure water.

View solution

Q. 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.

View solution

Q. 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

View solution

Q. The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

View solution

Q. The velocity corresponding to Reynold number of 2000 is called

View solution

Q. The specific weight of water in S.I. units is taken as

View solution

Q. The loss of head at exit of a pipe is

View solution

Q. The flow in a pipe is laminar, when Reynold number is less than 2000.

View solution

Q. The power transmitted through the pipe is maximum when the head lost due to friction is equal to

View solution

Q. The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

View solution

Q. The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

View solution

Q. The difference between the notch and weir is that the notch is of bigger size and the weir is of a smaller size.

View solution

Q. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.

View solution

Q. Euler's number is the ratio of __________ force to pressure force.

View solution

Q. A flow is called sub-sonic, if the Mach number is

View solution

Q. The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.

View solution

Q. Re-entrant or Borda's mouthpiece is an __________ mouthpiece.

View solution

Q. The flow in a pipe is neither laminar nor turbulent when Reynold number is

View solution