431. 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.
Fluid Mechanics MCQs
432. 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.
433. 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.
434. For pumping slurry, one can use a __________ pump.
Reciprocating
Diaphargm
Centrifugal
Pneumatic
✅ The correct answer is option B.
435. 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.
436. 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.
437. It is possible to integrate an automatic flow controller to a
Flow nozzle
Venturimeter
Rotameter
None of these
✅ The correct answer is option C.
438. For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is
More
Less
Equal
More or less, depending on the type of particle
✅ The correct answer is option A.
439. What is the value of Fanning friction factor f ‘ for smooth pipe at NRe = 10⁶ approximately?
0.003
0.01
0.1
0.3
✅ The correct answer is option A.
440. In fluid flow, cavitation is caused, if the
Fluid velocity decreases to zero
Total energy decreases
Both A and B
Flow pressure approaches its vapor pressure at the prevailing temperature
✅ The correct answer is option D.