Reynolds number
Froude number
Mach number
All of the above
✅ The correct answer is option A.
Fluid Mechanics MCQs
Drag force acting on a body does not depend upon the
Density of the fluid
Density of the body
Velocity of the body
Projected area of the body
✅ The correct answer is option B.
For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.
Axial
Reciprocating
Rotary
None of these
✅ The correct answer is option C.
Each term of the Bernoulli’s equation written in the form, P/ρ + g/gc .Z + v²/2gc = constant , represents the total energy per unit
Mass
Volume
Specific weight
None of these
✅ The correct answer is option A.
For pumping slurry, one can use a __________ pump.
Reciprocating
Diaphargm
Centrifugal
Pneumatic
✅ The correct answer is option B.
Critical velocity in a pipe flow
Increases as fluid viscosity increases
Increases as pipe diameter increases
Independent of fluid density
None of these
✅ The correct answer is option B.
In Newton’s law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is
0.44
0.044
4.4
44
✅ The correct answer is option A.
It is possible to integrate an automatic flow controller to a
Flow nozzle
Venturimeter
Rotameter
None of these
✅ The correct answer is option C.
Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m)
N²D³
ND²
N²D
N³D⁵
✅ The correct answer is option D.
For an ideal fluid flow, Reynolds number is
2100
100
0
∞
✅ The correct answer is option D.