Chemical Engineering Fluid Kinematics Questions - Set 24 - ObjectiveBooks

Chemical Engineering Fluid Kinematics Questions - Set 24

Practice Test: Question Set - 24

1. The unit of dynamic viscosity in SI unit is
    (A) kg/m. sec
    (B) N/m2
    (C) m2 /sec
    (D) m/N. sec

2. The head developed by a centrifugal pump is largely determined by the
    (A) Power of the pump
    (B) Nature of the liquid being pumped
    (C) Angle of the vanes and the speed of the tip of the impeller
    (D) Vapor pressure of the liquid

3. The pitot static tube does not measure the __________ pressure.
    (A) Static
    (B) Total
    (C) Difference in static & dynamic
    (D) All (a), (b) and (c)

4. Priming is needed in a __________ pump.
    (A) Reciprocating
    (B) Gear
    (C) Centrifugal
    (D) Diaphragm

5. Vena-contracta formed during flow of a liquid through an orificemeter has
    (A) Minimum liquid cross-section
    (B) More diameter compared to orifice diameter
    (C) Minimum velocity of fluid stream
    (D) None of these

6. The Mach number for hypersonic flow of compressible fluid is
    (A) 1
    (B) > 1
    (C) > 4
    (D) < 2

7. For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter)
    (A) Vs/Dp2
    (B) Vs2/Dp2
    (C) Vs2/ Dp3
    (D) Vs/Dp3

8. Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of __________ flow type.
    (A) Axial
    (B) Radial
    (C) Mixed
    (D) None of these

9. What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta?
    (A) 0.64
    (B) 1.65
    (C) 0.32
    (D) 0.94

10. Which of the following properties of a fluid is responsible for offering resistance to shear?
    (A) Surface tension
    (B) Viscosity
    (C) Specific gravity
    (D) All (a), (b), and (c)

11. All pipes of a particular nominal size have the same
    (A) Inside diameter
    (B) Outside diameter
    (C) Thickness
    (D) None of these

12. An ideal fluid is
    (A) Non-viscous
    (B) Incompressible
    (C) Both (a) & (b)
    (D) Neither (a) & (b)

13. Purpose of hydraulic accumulator is to
    (A) Ensure intermittent supply of hydraulic pressure
    (B) Increase the pressure and store/ accumulate it
    (C) Accumulate pressure to increase force
    (D) Generate high pressure to operate hydraulic machines like cranes, lifts, presses etc.

14. Power required for mixing Newtonian fluids is a function of the
    (A) Speed of impeller, diameter of impeller & viscosity
    (B) Density & viscosity of fluid only
    (C) Density of fluid, viscosity of fluid & impeller dia only
    (D) None of these

15. Dimension of absolute viscosity is
    (A) ML-1T-1
    (B) MLT-1
    (C) ML-1T
    (D) MLT

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