Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 56 of 73)

Attempt Fluid Mechanics for Chemical Quiz
Each term of the Bernoulli’s equation written in the form, (p/ρ) + (g/gc). Z + (v2/2gc) = constant, represents the total energy per unit ________________?
A. Mass
B. Volume
C. Specific weight
D. None of these
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What causes convective acceleration in fluid flow ?
A. Steep slope in flow
B. Unsteady nature of flow
C. Non-uniformity of flow
D. Turbulence in flow
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With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the____________________?
A. Velocity increases
B. Pressure decreases
C. Both a. & b.
D. Neither a. nor b.
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A streamline is_________________?
A. The line connecting the mid-points of flow cross-sections
B. Defined for uniform flow only
C. Drawn normal to the velocity vector at every point
D. Always the path of a particle
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Deformation drag, which is caused by widespread deformation of fluid around the immersed body____________________?
A. Occurs when nre is very small
B. Is primarily a friction drag
C. Is independent of body length
D. Depends mainly on cross-sectional shape
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The pump impeller and the turbine runner in a hydraulic torque converter___________________?
A. Have the same diameter
B. Have different diameters
C. Are directly coupled
D. None of these
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Which of the following is a dimensionless parameter ?
A. Angular velocity
B. Specific weight
C. Kinematic viscosity
D. None of these
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When the pipe Reynold’s number is 6000, the flow is generally___________________?
A. Viscous
B. Laminar
C. Turbulent
D. Transition
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Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the _______________ decreases?
A. Npsh required
B. Bhp required by the pump
C. Head of the liquid pumped
D. All a., b. and c.
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If Blasius or Darcy friction factor is ‘f1’ then the Fanning friction factor is equal to____________________?
A. F1/4
B. 4f2
C. 2f1
D. F1/2
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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