Q. The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

View solution

Q. In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as that of the atmosphere.

View solution

Q. Newton's law of viscosity is a relationship between

View solution

Q. The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

View solution

Q. The viscosity of water at 20°C is

View solution

Q. The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation.

View solution

Q. The discharge through a channel of rectangular section will be maximum, if

View solution

Q. When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as

View solution

Q. The property of a liquid which enables it to resist tensile stress is called its surface tension.

View solution

Q. The magnitude of water hammer depends upon the

View solution

Q. The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

View solution

Q. The dynamic viscosity of gases __________ with rise in temperature.

View solution

Q. A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.

View solution

Q. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

View solution

Q. The velocity at which the turbulent flow starts is known as higher critical velocity.

View solution

Q. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

View solution

Q. The specific weight is also known as weight density.

View solution

Q. In a lockgate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

View solution

Q. The mercury does not wet the glass. This is due to the property of the liquid known as

View solution

Q. The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

View solution