391. A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
Sump
Volute
Vacuum
Submerged
✅ The correct answer is option C.
Fluid Mechanics MCQs
392. The schedule number of a pipe is an indication of its
Size
Roughness
Material density
Wall thickness
✅ The correct answer is option D.
393. Buoyant force
For non-symmetrical bodies is not vertical
Depends on the depth of the submergence of the floating body
Depends on the weight of the floating body
None of these
✅ The correct answer is option C.
394. The kinetic energy correction factor for velocity distribution of laminar flow is
0.5
1.66
1
2
✅ The correct answer is option B.
395. Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases.
NPSH required
BHP required by the pump
Head of the liquid pumped
All of the above
✅ The correct answer is option D.
396. The capillary rise of mercury is maximum in glass tube of dia __________ mm.
0.5
1
2
5
✅ The correct answer is option A.
397. Potential function is applicable only for __________ flow.
Irrotational
Turbulent
Steady
None of these
✅ The correct answer is option A.
398. __________ isused for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline.
Venturimeter
Pressure gauge
Pitot tube
Orificemeter
✅ The correct answer is option C.
399. One stoke (unit of kinematic viscosity) is equivalent to
1 cm²/second
1 m²/second
1 gm/cm. second
1 kg . m/second
✅ The correct answer is option A.
400. Shear stress in a fluid flowing in a round pipe
Varies parabolically across the cross-section
Remains constant over the cross-section
Is zero at the centre and varies linearly with the radius
Is zero at the wall and increases linearly to the centre
✅ The correct answer is option C.