111. A fluid having no viscosity is known as
real fluid
ideal fluid
newtonian fluid
non-newtonian fluid
✅ The correct answer is option B.
Hydraulics and Fluid Mechanics MCQs
112. The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)
✅ The correct answer is option B.
113. Water is a __________ fluid.
real
ideal
newtonian
non-newtonian
✅ The correct answer is option C.
114. The D-Alembert’s principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.
Agree
Disagree
✅ The correct answer is option A.
116. The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.
decreases
increases
✅ The correct answer is option B.
118. Reynold’s number is the ratio of inertia force to
pressure force
elastic force
gravity force
viscous force
✅ The correct answer is option D.
119. When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
Pascal’s law
Archimede’s principle
principle of floatation
Bernoulli’s theorem
✅ The correct answer is option B.
120. When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
steady flow
turbulent flow
vortex flow
uniform flow
✅ The correct answer is option C.