✅ The correct answer is option D.
Hydraulics and Fluid Mechanics MCQs
Water is __________ liquid.
a compressible
an incompressible
✅ The correct answer is option B.
The total energy line lies over the centre line of the pipe by an amount equal to
pressure head
velocity head
pressure head + velocity head
pressure head – veloci
✅ The correct answer is option C.
The value of coefficient of discharge is __________ the value of coefficient of velocity.
less than
same as
more than
✅ The correct answer is option A.
The volume per unit mass of a liquid is called specific volume.
Yes
No
✅ The correct answer is option A.
Coefficient of velocity is defined as the ratio of
actual velocity of jet at vena contracta to the theoretical velocity
area of jet at vena contracta to the area of orifice
actual discharge through an orifice to the theoretical discharge
none of the above
✅ The correct answer is option A.
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is
✅ The correct answer is option B.
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.
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.
The flow in a pipe or channel is said to be uniform when
the liquid particles at all sectons have the same velocities
the liquid particles at different sections have different velocities
the quantity of liquid flowing per second is constant
each liquid particle h
✅ The correct answer is option A.