Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 20 of 73)

Attempt Fluid Mechanics for Chemical Quiz
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump_________________?
A. Develops a lower head
B. Capacity is reduced
C. Requires more power
D. All a., b. and c.
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The pressure and power requirement of a gas fan at constant speed & capacity varies ____________ the gas density?
A. Directly as
B. Inversely as square root of
C. Inversely as
D. As square of
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The maximum depth from which a centrifugal pump can draw water is________________?
A. Dependent on the speed of the pump
B. Dependent on the power of the pump
C. 34 feet
D. 150 feet
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Laminar flow is characterised by the nonexistence of_________________?
A. Pressure fluctuation
B. Eddies
C. Deviating velocities
D. All a., b. & c.
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The capillary rise of mercury is maximum in glass tube of dia _____________ mm?
A. 0.5
B. 1
C. 2
D. 5
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Boundary layer exists in flow_________________?
A. Of real fluids
B. Over flat surfaces only
C. In pipes only
D. Of ideal fluids only
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The most serious disadvantage of an orificemeter is that________________?
A. It is not very accurate
B. It is very costly
C. Most of the pressure drop is not recoverable
D. It is not suitable for measuring gas flow
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Drag is the force component exerted on an immersed object, ?
A. Passing the centroid of the body at 60°to the direction of motion
B. The component being parallel to the flow direction
C. The component being normal to the flow direction
D. None of these
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Paper pulp is an example of _____________ fluid?
A. Dilatant
B. Bingham plastic
C. Newtonian
D. Pseudo-plastic
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The vent valve provided in a liquid handling centrifugal pump is___________________?
A. Generally a needle valve
B. Used to release any gases that might be vapour locking the pump
C. Helpful in easy removal of samples
D. All a., b. and c.
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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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