Engineering, 27.06.2021 09:20 grace9874
I) A double-column enlarged-ends manometer is used to measure a small pressure
difference between the two points of a system conveying air under pressure, the diameter
of U-tube being 1/8 of the diameter of the enlarged ends. The heavy liquid used is water
and the lighter liquid in both limbs is oil of relative density 0.79. Assuming the surfaces of
the lighter liquid to remain in the enlarged ends, determine the difference in pressure in
metres of water for a manometer displacement of 70 mm.
(4 marks)
What would be the manometer reading if carbon tetrachloride (of relative density 1.56)
were used in place of water, the pressure conditions remaining the same? (3 marks)
dr
0
Oil
dx
Area, A
b
70
Area, a
DO
Water
Answers: 3
Engineering, 04.07.2019 18:10, niyawilliams23
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
Engineering, 04.07.2019 18:10, oliviasoreo92
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
I) A double-column enlarged-ends manometer is used to measure a small pressure
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