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accuracy alternating alternating current amperes approximation cent chain fraction charging current circuit coefficients column of Table constant term core loss corresponding values cosine decimal decreasing derived determined differential equation efficiency electrical engineering empirical curve error Example exciting current exponent exponential function expression extreme factor fifth harmonic flat zero frequently function y=f(x fundamental given half wave hence herefrom horizontal hyperbolic curve increase induction motor infinite series inflection point instance integral inversely logarithmic magnetic mathematical maxima maximum power method minimum multiple negative numbers nozzle numerical values o o o observations ohms output peak periodic function plotted power-factor quadrature number range ratio of variation reactance represented resistance resistor result shunted simplified sine wave sixth column small quantity solution square steam steep zero straight line substituting subtracting third harmonic tion transmission line trigonometric functions trigonometric series triple harmonic vector volt-ampere voltage consumed volts
Page 275 - Indeed, the most important part of engineering work—and also of other scientific work—is the determination of the method of attacking the problem, whatever it may be,
Page 21 - product is the sum of the logarithms of the factors, thus log,,
Page 192 - The second term in the denominator is small compared with the first term, and
Page 143 - is given as the square root of the sum of squares of the
Page 293 - With the most brilliant engineering design, however, if in the numerical calculation of a single structural member an error has been made, and its strength thereby calculated wrong, the rotor of the machine flies to pieces by centrifugal forces, or the bridge collapses, and with it the reputation of the engineer.
Page 15 - positive is chosen to the right and upward, negative to the left and downward, as indicated in Fig.
Page 275 - be reduced to a small fraction of what it would otherwise be,