A town is receiving its water supply from an impounding reservoir  through a 90 cm. inside water gravity main with a fall of 79.2 m. in 80.5  km. Due to rapid growth of population, it is proposed to increase the  supply by 50 percent by laying a part length of an additional 150 cm,  inside steel main, old and new lines being joined by cross-connetions.  Find out the exact length of the new pipe line to give this additional  discharge. Use f = 0.01. ans. L=47.3 km

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Time and time related variables in engineering

Time is the event progression starting from past to present and then, future statistically. The time-related variable is any particular value in relation to time to assess its changes on a specified (XY) plane.