Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 52 of 73)

Attempt Fluid Mechanics for Chemical Quiz
Velocity at a certain point in case of streamline flow is_________________?
A. Constant
B. Independent of time
C. Both a. & b.
D. Neither a. nor b.
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The discharge co-efficient for an orifice meter does not depend upon the ___________________?
A. Pipe length
B. Ratio of pipe diameter to orifice diameter
C. Type of orifice & the reynolds number
D. Pipe diameter
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For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary_______________?
A. Directly as square of gas density
B. Directly as gas density
C. Directly as square root of gas density
D. Inversely as gas density
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For the free settling of a spherical particle through a fluid, the slope of, CD-log NRe, plot is____________________?
A. 1
B. -1
C. 0.5
D. -0.5
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Euler’s equation of motion states, that at every point, the_________________?
A. Fluid momentum is constant
B. Force per unit mass equals acceleration
C. Rate of mass outflow is equal to the rate of mass inflow
D. None of these
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Steady flow occurs, when the__________________?
A. Conditions change steadily with time
B. Conditions are the same at the adjacent points at any instant
C. Conditions do not change with time at any point
D. Rate of the velocity change is constant
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Euler’s equation of motion is a statement expressing____________________?
A. Conservation of mass
B. Conservation of energy
C. Newton’s first law of motion
D. Newton’s second law of motion
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The pressure drop per unit length of pipe incurred by a fluid ‘X’ flowing through pipe is Δp. If another fluid ‘Y’ having both the specific gravity & density just double of that of fluid ‘X’, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be__________________?
A. Δp
B. 2δp
C. Δp2
D. Δp/2
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Two dimensional stream function________________?
A. Relates velocity and pressure
B. Is constant along a stream line
C. Is constant along an equipotential surface
D. None of these
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Small pressure differences in liquids is measured using a/an__________________?
A. U-tube manometer
B. Inclined tube manometer
C. Pitot tube
D. None of these
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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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