Competitive Exam Paper Chemical Engineering Fluid Mechanics - Set 33 - ObjectiveBooks

Competitive Exam Paper Chemical Engineering Fluid Mechanics - Set 33

Practice Test: Question Set - 33

1. Check valves are used
    (A) At high pressure
    (B) In bends
    (C) For controlling water flow
    (D) For unidirectional flow

2. A fluid is the one, which
    (A) Cannot remain at rest under the action of shear force
    (B) Continuously expands till it fills any container
    (C) Is incompressible
    (D) Permanently resists distortion

3. A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double
    (A) Head
    (B) Discharge
    (C) Efficiency
    (D) None of these

4. Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
    (A) 2 to 3
    (B) 0.01 to 0.10
    (C) 200 to 300
    (D) 100 to 1000

5. Boundary layer separation is caused by the
    (A) Reduction of pressure to vapor pressure
    (B) Boundary layer thickness reducing to zero
    (C) Adverse pressure gradient
    (D) Reduction of pressure gradient to zero

6. Select the wrong statement pertaining to flow of an incompressible fluid through a Venturimeter.
    (A) For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the Venturimeter
    (B) Discharge of fluid through a Venturimeter depends upon the gage difference irrespective of the orientation of Venturimeter
    (C) Venturimeter occupies less space than an orificemeter
    (D) Venturimeter incurs less power loss compared to an equivalent orificemeter

7. If 'x' is the depth of flow in an open channel of large width, then the hydraulic radius is equal to
    (A) x
    (B) x/2
    (C) x/3
    (D) 2x/3

8. The velocity profile for turbulent flow through a closed conduit is
    (A) Logarithmic
    (B) Parabolic
    (C) Hyperbolic
    (D) Linear

9. A differential pressure cell is used for
    (A) Measuring small pressure difference in gases
    (B) Measuring small pressure difference in liquids
    (C) Remote recording of pressure difference
    (D) Measuring the difference of the impact & the static pressure

10. Nominal size of a pipe is an indication of its __________ diameter.
    (A) Inner
    (B) Outer
    (C) Approximate
    (D) None of these

11. Which of the following pipe bends will incur the largest head loss?
    (A) U-bend
    (B) 30° bend
    (C) 45° bend
    (D) 90° bend

12. The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.
    (A) Bingham
    (B) Newtonian
    (C) Perfect
    (D) None of these

13. Which of the fluid forces are not considered in the Reynold's equation of flow?
    (A) Viscous forces
    (B) Turbulent forces
    (C) Pressure forces
    (D) Compressibility forces

14. With increase in pump speed, its NPSH requirement
    (A) Decreases
    (B) Increases
    (C) Remains unaltered
    (D) Can either increase or decrease; depends on other factors

15. Bernoulli’s equation does not apply to the functioning of a/an
    (A) Venturimeter
    (B) Orificemeter
    (C) Pitot tube
    (D) None of these

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