Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 5 of 73)

Attempt Fluid Mechanics for Chemical Quiz
I.D. of 1/4″ schedule 40 pipe is 0.364″. I.D. of a 1/2″ schedule 40 pipe would be ______________ inch?
A. 4.728
B. 0.5
C. 0.622
D. 0.474
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Which of the following is most prone to pulsating discharge flow ?
A. Centrifugal pump
B. Reciprocating pump
C. Gear pump
D. Axial flow pump
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A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, the new discharge will be __________ litres/minute ?
A. 500
B. 200
C. 1000
D. 750
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Discharge in laminar flow through a pipe varies________________?
A. As the square of the radius
B. Inversely as the pressure drop
C. Inversely as the viscosity
D. As the square of the diameter
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Self-priming centrifugal pump can be used for________________?
A. Booster service
B. Pumping liquid fertilisers (e.g. liquid nh3)
C. Pumping industrial wastes
D. All a., b. and c.
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In deriving Bernoulli’s equation, fluid is assumed to be________________?
A. Incompressible, frictionless, steady, along a streamline
B. Uniform, steady, incompressible, along a streamline
C. Steady, density being pressure dependent, frictionless
D. None of these
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Equivalent length of a pipe fitting is____________________?
A. Dependent on reynolds number
B. Independent of reynolds number
C. Dependent on the length of the pipe
D. None of these
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Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around________________?
A. 2000
B. 10
C. 100
D. 1000
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In the complete turbulence zone (in rough pipes), the____________________?
A. Rough and smooth pipes have the same friction factor
B. Laminar film covers the roughness projections
C. Friction factor depends upon nre only
D. Friction factor is independent of the relative roughness
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What is the value of Fanning friction factor f ‘ for smooth pipe at NRe = 106 approximately ?
A. 0.003
B. 0.01
C. 0.1
D. 0.3
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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