Chemical Engineering MCQs

6108 MCQs  (Page 404 of 611)

Attempt Chemical Engineering Quiz
The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the_________________?
A. Discharge
B. Suction
C. Suction minus vapor pressure of the liquid at suction temperature
D. Discharge minus vapor pressure of the liquid at the discharge temperature
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Nominal size of the discharge pipe of a pump is usually _____________ the nominal size of the inlet pipe?
A. Smaller than
B. Larger than
C. Same as
D. Twice
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Which of the following has the minimum compressibility ?
A. Water at room temperature
B. Air at room temperature
C. Oxygen at room temperature
D. Nitrogen at room temperature
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Power loss in an orificemeter is _____________ that in a Venturimeter?
A. Less than
B. Same as
C. More than
D. Data insufficient, cannot be predicted
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The unit of dynamic viscosity in SI unit is__________________?
A. Kg/m. sec
B. N/m2
C. M2 /sec
D. M/n. sec
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The pitot static tube does not measure the _____________ pressure?
A. Static
B. Total
C. Difference in static & dynamic
D. All a., b. and c.
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Vena-contracta formed during flow of a liquid through an orificemeter has__________________?
A. Minimum liquid cross-section
B. More diameter compared to orifice diameter
C. Minimum velocity of fluid stream
D. None of these
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For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter) ?
A. Vs/dp2
B. Vs2/dp2
C. Vs2/dp3
D. Vs/dp3
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What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?
A. 0.64
B. 1.65
C. 0.32
D. 0.94
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All pipes of a particular nominal size have the same_________________?
A. Inside diameter
B. Outside diameter
C. Thickness
D. None of these
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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