1. A differential manometer is used to measure
atmospheric pressure
pressure in pipes and channels
pressure in venturimeter
difference of pressure
✅ The correct answer is option D.
Hydraulics and Fluid Mechanics MCQs
2. A fluid which obeys the Newton’s law of viscosity is termed as
real fluid
ideal fluid
newtonian fluid
non-newtonian fluid
✅ The correct answer is option C.
3. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
The pressure on the wall at the liquid level is minimum.
The pressure on the bottom of the wall is maximum.
The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
The pressure on the bo
✅ The correct answer is option C.
5. The ratio of the inertia force to the elastic force is called
Reynold’s number
Froude’s number
Weber’s number
Mach number
✅ The correct answer is option D.
8. When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
1.84(L – 0.1nH)H3/2
1.84(L – nH)H2
1.84(L – 0.1nH)H5/2
1.84(L – nH)H3
✅ The correct answer is option A.
9. The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
equal to
less than
more than
✅ The correct answer is option C.
10. The unit of dynamic viscosity in S.I. units is
N-m/s2
N-s/m2
poise
stoke
✅ The correct answer is option B.