Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg ?
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg ?
A. 1
B. 0.1
C. 0.01
D. 0.001
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For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?A. R
B. R2
C. R4
D. R0.5The pressure and power requirement of a gas fan at constant speed & capacity varies ____________ the gas density?
The pressure and power requirement of a gas fan at constant speed & capacity varies ____________ the gas density?A. Directly as
B. Inversely as square root of
C. Inversely as
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The discharge through a semi-circular weir varies as (where, H = Head of liquid.) ?A. H
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C. H3/2
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The simple Pitot tube measures the _______________ pressure?A. static
B. Dynamic
C. Total
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C. h2 < h1 < h3
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B. Centre of gravity
C. Centre of buoyancy
D. None of these