Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 44 of 73)

Attempt Fluid Mechanics for Chemical Quiz
In case of a ____________ the energy of flow is considerably decreased downstream of the machine?
A. Blower
B. Turbine
C. Centrifugal pump
D. Centrifugal fan
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Acceleration head in a reciprocating pump_______________________?
A. Increases the work done during delivery stroke
B. Decreases the work done during suction stroke
C. Does not change the work requirement of the pump
D. Increases the work done during suction stroke
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With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentially
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In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?
A. 1/√t
B. 1/t
C. √t
D. T
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One horsepower is equal to________________?
A. 550 lbf.ft/second
B. 550 kgf.m/second
C. Both a. and b.
D. 550 lbf.ft./hr
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An ideal nozzle design aims at________________?
A. Minimising wall friction
B. Suppressing boundary layer separation
C. Both a. & b.
D. Neither a. nor b.
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In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as: (where, ‘δ’ is the boundary layer thickness and ‘x’ is the distance from the leading edge in the direction of flow)?
A. Re
B. √re
C. 1/re
D. Re-1/2
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In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?
A. 1/√m
B. √m
C. 1/m
D. M
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The bulk modulus of elasticity of a liquid__________________?
A. Is zero for incompressible liquid
B. Decreases with pressure
C. Is independent of temperature & pressure
D. Increases with pressure
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The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a____________________?
A. Weir
B. Pitot tube
C. Kennison nozzle
D. V-notch
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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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