76) A weir is usually made of masonry or concrete.

77) The shear stress-strain graph for a newtonian fluid is a

78) If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.

79) A flow in which each liquid particle does not have a definite path and the paths of individual particles also cross each other, is called turbulent flow.

80) A flow in which the viscosity of fluid is dominating over the inertia force is called