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Identify and state the historical significance of Samuel Tilden.
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The Democratic candidate who ran against Hayes. He lost the presidency when a deal was struck to allow Hayes to become president in exchange for the removal of federal troops from two southern states.
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Draw a level control loop.
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____________________ classes are judged on the position and effectiveness of the rider.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements about centrifugal pumps is true?
a. With the valve in the discharge piping closed, the rotating impeller churns in the water causing the pressure at the outlet to rise to the shut-off head. b. If the discharge valve is gradually opened, allowing increasing flow of water, the pump head decreases. c. When the pump lifts water from a reservoir into a piping system; the resistance of flow at various rates of discharge is described by a system head curve. d. With increasing rate of discharge, pump efficiency rises to an optimum value and then slowly falls. e. All of the above.
Suppose a liquid at 60
F has a specific gravity of 6.28. If the measured pressure at the bottom of the tank in which it is stored is 34.2 psi, what is the height of the liquid?
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