Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 14 of 73)

Attempt Fluid Mechanics for Chemical Quiz
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?
A. I, ii, iii
B. Ii, iii, v
C. I, ii, v
D. Ii, iv, v
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For steady ideal fluid flow, the Bernoulli’s equation states that the_________________?
A. Velocity is constant along a stream line
B. Energy is constant throughout the fluid
C. Energy is constant along a stream line, but may vary across stream lines
D. None of these
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The velocity for subsonic flow in a pipeline_______________?
A. Increases in the downstream direction
B. Is constant
C. Decreases in the downstream direction
D. Is independent of the area of flow
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Scale up of agitator design requires________________?
A. Geometrical similarity only
B. Dynamic similarity only
C. Both geometrical and dynamic similarity
D. All geometrical, dynamic and kinematic similarity
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The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
A. Q1/q2
B. Q2/q1
C. (q2 – q1)/q1
D. (q2 – q1)/q2
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Glass pipes can be joined by__________________?
A. Flanges
B. Welding
C. Soldering
D. Bell and spigot joint
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For the same terminal conditions and fitting size, the least friction loss is incurred in a/an ?
A. T-joint
B. Union
C. 45° elbow
D. 90°bend
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At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?
A. 40° and 140°
B. 45° and 60°
C. 90° and 80°
D. 20° and 120°
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The ratio of maximum to average velocity in case of streamline flow between parallel plates is______________________?
A. 1
B. 1.5
C. 2
D. 2.5
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The valve commonly used in pipes larger than 2″ dia is a______________?
A. Globe valve
B. Plug-cock
C. Gate valve
D. Check valve
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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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