Energy per unit mass
Energy per unit weight
Force per unit mass
None of these
✅ The correct answer is option B.
Fluid Mechanics MCQs
702. Drag is defined as the force exerted by the
Fluid on the solid in a direction opposite to flow
Fluid on the solid in the direction of flow
Solid on the fluid
None of these
✅ The correct answer is option B.
703. A fluid is the one, which
Cannot remain at rest under the action of shear force
Continuously expands till it fills any container
Is incompressible
Permanently resists distortion
✅ The correct answer is option A.
704. Surge tanks are provided in high pressure water pipelines to
Store a definte quantity ofwater all the time
Reduce the water hammer
Facilitate easy dismantling of pipeline for cleaning and maintenance
None of these
✅ The correct answer is option B.
705. Baffles in mixing tanks are provided to
Reduce swirling and vortex formation
Increase the structural strength of the tank
Aid in rotational flow
None of these
✅ The correct answer is option A.
706. The friction factor is
Always inversely proportional to the Reynolds number
Not dimensionless
Not dependent on the roughness of the pipe
None of these
✅ The correct answer is option D.
707. Volume of liquid displaced by a floating body is equivalent to its
Own weight
Submerged weight
Own volume
Submerged volume
✅ The correct answer is option A.
708. The pump impeller and the turbine runner in a hydraulic torque converter
Have the same diameter
Have different diameters
Are directly coupled
None of these
✅ The correct answer is option B.
709. In case of centrifugal fan or blower, the gas capacity varies as
Speed
(speed)2
(speed)3
(speed)0.5
✅ The correct answer is option A.
710. Pressure drop in packed bed for turbulent flow is given by the __________ equation.
Kozney-Karman
Blake-Plummer
Leva’s
Hagen-Poiseulle’s
✅ The correct answer is option B.