The book Modern Turbine Practice And Water Power Plants was written by author John Wolf Thurso Here you can read free online of Modern Turbine Practice And Water Power Plants book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Modern Turbine Practice And Water Power Plants a good or bad book?
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4XLXF ~~ It will be observed that ~irf \* fity A ^-^- = : . 01324 is a constant, call this &aa and the formula becomes, - APPENDIX. 2i3 Applying this to the flume we have been discussing, in which L=300, 7=2, !T=2, we have p . 01324 X 300 X2_ 0fV7 r= ^ o. Y/. As a water-column 1 ft. High exerts a pressure of . 43 Ib. Per square inch, it follows that a pressure of 3. 97 Ibs. Per square inch represents a head of 3. 97 -=-. 43 = 9. 2 ft. In other words, if the pressure on the wheel could have been... kept constant all the time the water-column was slowing up from 4 ft. Per second to 2 ft. Per second, the wheel would have been working under 9 + 9. 2 = 18. 2 ft. Of head, instead of under 9 ft. Of head as it should have been. From experience we know that it is impossible to close the water-wheel gates at such a rate as to keep the pressure constant, -and as a matter of fact, during some portion of the two seconds the water-pressure would have been greatly in excess of 3. 97 Ibs. Per square inch above normal, with a correspondingly large dis- turbance of the speed.
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