6341. 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.
Chemical Engineering
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6342. 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.
6343. It is possible to integrate an automatic flow controller to a
Flow nozzle
Venturimeter
Rotameter
None of these
✅ The correct answer is option C.
6344. 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.
6345. 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.
6346. The line of action of the buoyant force acts through the
Centroid of the displaced volume of fluid
Centre of gravity of a submerged body
Centroid of the volume of any floating body
None of these
✅ The correct answer is option A.
6347. The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is
Q∝N : H∝N² : P∝N³
Q∝N² : H∝N³ : P∝N
Q∝N : H∝N³ : P∝N²
Q∝N³ : H∝N : P∝N²
✅ The correct answer is option A.
6348. Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an
Weir
Hot wire anemometer
Cup and vane aneometer
None of these
✅ The correct answer is option B.
6349. Open channel liquid flow is most conveniently measured by a
Hot wire anemometer
Notch
Rotameter
Segmental orifice
✅ The correct answer is option B.
6350. Paper pulp is an example of __________ fluid.
Dilatant
Bingham plastic
Newtonion
Pseudoplastic
✅ The correct answer is option B.