Fluid Mechanics for Chemical MCQs

724 MCQs — Chemical Engineering MCQs (Page 41 of 73)

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Nominal size of the discharge pipe of a pump is usually _____________ the nominal size of the inlet pipe?

A. Smaller than
B. Larger than
C. Same as
D. Twice

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Which of the following has the minimum compressibility ?

A. Water at room temperature
B. Air at room temperature
C. Oxygen at room temperature
D. Nitrogen at room temperature

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Power loss in an orificemeter is _____________ that in a Venturimeter?

A. Less than
B. Same as
C. More than
D. Data insufficient, cannot be predicted

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The unit of dynamic viscosity in SI unit is__________________?

A. Kg/m. sec
B. N/m2
C. M2 /sec
D. M/n. sec

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The pitot static tube does not measure the _____________ pressure?

A. Static
B. Total
C. Difference in static & dynamic
D. All a., b. and c.

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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

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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

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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

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All pipes of a particular nominal size have the same_________________?

A. Inside diameter
B. Outside diameter
C. Thickness
D. None of these

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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

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