331. The separation of flow occurs when the hydrodynamic boundary layer thickness is reduced to zero.
Agree
Disagree
✅ The correct answer is option A.
Hydraulics and Fluid Mechanics MCQs
332. One stoke is equal to
10-2 m2/s
10-3 m2/s
10-4 m2/s
10-6 m2/s
✅ The correct answer is option C.
333. The ratio of the inertia force to the __________ is called Euler’s number.
pressure force
elastic force
surface tension force
viscous force
✅ The correct answer is option A.
334. The intensity of pressure at any point, in a liquid, is
directly proportional to the area of the vessel containing liquid
directly proportional to the depth of liquid from the surface
directly proportional to the length of the vessel containing liquid
inversely proportional
✅ The correct answer is option B.
335. One cubic metre of water weighs
100 litres
250 litres
500 litres
1000 litres
✅ The correct answer is option D.
336. If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, The body is said to be in __________ equilibrium.
neutral
stable
unstable
✅ The correct answer is option A.
337. When a body is placed over a liquid, it will float if
gravitational force is equal to the upthrust of the liquid
gravitational force is less than the upthrust of the liquid
gravitational force is more than the upthrust of the liquid
none of the above
✅ The correct answer is option A.
338. The hydraulic gradient line may be above or below the centre line of the pipe.
TRUE
FALSE
✅ The correct answer is option B.
339. When a body is placed over a liquid, it will sink down if
gravitational force is equal to the upthrust of the liquid
gravitational force is less than the upthrust of the liquid
gravitational force is more than the upthrust of the liquid
none of the above
✅ The correct answer is option C.
340. A flow through a long pipe at constant rate is called
steady uniform flow
steady non-uniform flow
unsteady uniform flow
unsteady non-uniform f
✅ The correct answer is option A.