Calculate the hydraulic diameter for each of the following conduit cross sectional areas. a. a semicircle of diameter d with the top closed, b. a semicircle of diameter d with the top open. c. a closed square of sides a. d. an annulus with internal diameter di and external diameter d2.

the answer would be c

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

може ли да зареждате повече информация, моля

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.