Chemical Fluid Mechanics MCQ Questions & Answers - Set 04 - ObjectiveBooks

Chemical Fluid Mechanics MCQ Questions & Answers - Set 04

Practice Test: Question Set - 04

1. The ratio of pressure forces to inertial forces is called the __________ number.
    (A) Froude
    (B) Euler
    (C) Reynold
    (D) Mach

2. Air vessel fitted to a reciprocating pump
    (A) Increases the work done
    (B) Decreases the work done
    (C) Causes cavitation
    (D) Results in non-uniform discharge

3. Pick out the Kozeny-Carman equation (valid for low NRe) for fluid flow through a packed bed of solids.
    (A) ∆p/ρ = 4f (L/D) (V2/2gc)
    (B) fP = (150 (1 - ε)/NRe) + 1.75
    (C) (-∆p. gc. D P 23)/(L. 0. µ (1 - ε)2) = 150
    (D) (-∆p/δ.L) (gc/02) (DP3/(1 - ε)) = 1.75

4. Pressure drop in packed bed for turbulent flow is given by the __________ equation.
    (A) Kozeny-Carman
    (B) Blake-Plummer
    (C) Leva's
    (D) Hagen-Poiseuille’s

5. A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by
    (A) Decreasing the size of the inlet pipe
    (B) Increasing the size of the inlet pipe
    (C) Lowering the pump position
    (D) Both (b) and (c)

6. The __________ pressure is measured by a static tube.
    (A) Dynamic
    (B) Static
    (C) Total
    (D) None of these

7. A hydraulic accumulator comprises of
    (A) A storage device and a control valve
    (B) A cylinder and a plunger
    (C) Two pistons and two cylinders
    (D) A storage tank and a ram pump

8. Pascal law is not applicable for a/an __________ fluid.
    (A) Accelerating frictionless
    (B) Static
    (C) Uniformly moving
    (D) None of these

9. Fanning friction factor for laminar flow of fluid in a circular pipe is
    (A) Not a function of the roughness of pipe wall
    (B) Inversely proportional to Reynolds number
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

10. __________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm2.
    (A) Centrifugal
    (B) Piston
    (C) Plunger
    (D) Vane

11. In laminar flow through a round tube, the discharge varies
    (A) Linearly as the viscosity
    (B) Inversely as the pressure drop
    (C) Inversely as the viscosity
    (D) As the square of the radius

12. In a/an __________, the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure.
    (A) Rotameter
    (B) Pitot tube
    (C) Venturimeter
    (D) Flow nozzle

13. The ratio of inertial forces to viscous forces is called the __________ number.
    (A) Weber
    (B) Mach
    (C) Froude
    (D) Reynold

14. The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of __________ fluid.
    (A) Dilatent
    (B) Pseudo-plastic
    (C) Bingham plastic
    (D) Newtonian

15. Which of the following can be used to create a flow of gas, where no significant compression is required?
    (A) Reciprocating compressor
    (B) Blower
    (C) Axial flow compressor
    (D) Centrifugal compressor

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