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air-gap alternating alternating current alternating-current aluminum ampere-turns amperes armature boiler brushes capacity carbon cent centimeter coal coefficient coil commutator condenser conductors connected constant copper copper loss core cost curve cycles density diagram diameter dielectric dielectric strength direct-current effect efficiency Electrical electromagnet engines excitation field flux formula frequency frequency changers full-load galvanometer heat hysteresis increase induction motor instruments insulation iron leakage load loss machine magnetic circuit maximum measured meter method motor-generator obtained ohms operation phase pipe pole polyphase potential power-factor pressure primary ratio reactance regulation resistance rheostat rotor secondary short-circuit shown in Fig shunt single-phase slots speed standard stator steam steel strength surface switch temperature three-phase tion torque Trans transformers turbine unit usually velocity voltage voltmeter volts watt-hour meter wattmeter watts winding wire
Page 284 - And on and after July first, eighteen hundred and ninety-three, the same and no other shall be used in determining duties and taxes levied by the United States of America on sheet and plate iron and steel.
Page 765 - ... of one per cent, the mean of the two determinations being taken as the correct result. The sum of the percentage of moisture thus found and the percentage of surface moisture previously determined is the total moisture. (Appendix XI.) XVI. Treatment of Ashes and Refuse.
Page 877 - Diversity factor is the ratio of the sum of the maximum power demands of the subdivisions of any system or parts of a system to the maximum demand of the whole system or of the part of the system under consideration, measured at the point of supply.
Page 763 - Loss due to unconsumed hydrogen and hydrocarbons, to heating the moisture in the air, to radiation, and unaccounted for. (Some of these losses may be separately itemized if data are obtained from which they may be calculated.) Totals...
Page 236 - constant mass" temperature coefficient of any sample is 0.000597+0.000005 oi = . resistivity in ohms (meter, gram) at t° C. The density is 8.89 grams per cubic centimeter. NOTE 2. — The values given in the table are only for annealed copper of the standard resistivity. The user of the table must apply the proper correction for copper of any other resistivity. Hard-drawn copper may be taken as about 2.7 per cent higher resistivity than annealed copper.
Page 765 - It is desirable that a proximate analysis should be made, thereby determining the relative proportions of volatile matter and fixed carbon. These proportions furnish an indication of the leading characteristics of the fuel and serve to fix the class to which it belongs. As an additional indication of the characteristics of the fuel, the specific gravity should be determined. XVIII. Analysis of Flue Gases.
Page 764 - From this sample two one-quart, air-tight glass preserving jars, or other air-tight vessels which will prevent the escape of moisture from the sample, are to be promptly filled, and these samples are to be kept for subsequent determinations of moisture and of heating value and for chemical analyses. During the process of quartering, when the sample has been reduced to about 100 pounds, a quarter to a half of it may be taken for an approximate determination of moisture.
Page 877 - The Load Factor of a machine, plant or system is the ratio of the average power to the maximum power during a certain period of time. The average power is taken over a certain period of time...
Page 878 - Demand Factor: The demand factor of any system, or part of a system, is the ratio of the maximum demand of the system, or part of a system, to the total connected load of the system, or of the part of the system under consideration.