The fig figure below shows water flowing through a pipe reducer. the static pressure at(1) and (2) are measured using the manometer with a fluid of SG < 1 find( by applying Bernoulli's equations) a) barometer reading X=f (Q,A1,A2,SG)
c)if the vapour pressure of the water at the prevailing conditions is p=1.765kPa ,what the minimum area ratio(A2/A1) to prevent cavitation.
Assume P1/P2=5.6,SG=0.85,Q=0.05m3/s,D1=0.3m,L=1.5m and theta=30°
The answer to your question is provided in the image: