This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...that the water is without mass or friction, so the inertia and friction effects may be neglected. The diaphragm is at its central position and is exerting no pressure when the piston is at its middle point. The curves of pressure or e.m.f., quantity, and current for the two cases are shown in Fig. 94. Consider the time ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...that the water is without mass or friction, so the inertia and friction effects may be neglected. The diaphragm is at its central position and is exerting no pressure when the piston is at its middle point. The curves of pressure or e.m.f., quantity, and current for the two cases are shown in Fig. 94. Consider the time when the piston is at the end of the stroke. The diaphragm will be displaced to its greatest extent, and consequently the pressure on it will be at its maximum. This position of the piston corresponds to the point A on the diagram. We may assume as before that the curve of current is a sine curve. The curve of quantity of water or electricity displaced will evidently coincide with the curve of displacement of the piston and of the pressure. A moment's consideration, however, will show that the current will be zero at the time when the quantity displaced is a maximum. This is evident in the case of the hydraulic system, since at this time the piston is at the end of the stroke and the flow or current must consequently be zero. As the pressure begins to decrease beyond A the water or electricity begins to flow out of the diaphragm chamber in the one case, or out of the condenser in the other. This flow will be against the direction of the pressure. Consequently, we must draw the current curve sloping downward from the point A. At the time when the pressure or e.m.f. is zero the flow will evidently be greatest, since the piston is then moving with its greatest velocity, as it is at the center of its stroke. We can continue in this way to plot other points of the current curve, finally obtaining some such shape as shown. An inspection of this will show that the current reached its maximum value before the pressure. Moreover, since the displacemen...
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Add this copy of The Principles of Dynamo Electric Machinery to cart. $40.32, new condition, Sold by GreatBookPrices rated 4.0 out of 5 stars, ships from Columbia, MD, UNITED STATES, published 2016 by Palala Press.
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New. Sewn binding. Cloth over boards. 336 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Add this copy of The Principles of Dynamo Electric Machinery to cart. $61.06, like new condition, Sold by GreatBookPrices rated 4.0 out of 5 stars, ships from Columbia, MD, UNITED STATES, published 2016 by Palala Press.
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Fine. Sewn binding. Cloth over boards. 336 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Add this copy of The Principles of Dynamo Electric Machinery to cart. $61.07, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2016 by Palala Press.
