Cyclopedia of Engineering; a Complete Manual of Steam and Machine Practice...ed. by a Corps of Distinguished Engineers, Techical Experts and Eminent Authorities. Editor-in-chief, Louis Derr, Volume 3American technical society, 1902 |
Common terms and phrases
alternating current ampere-turns amperes armature conductors armature core armature current armature windings battery belt-driven brushes cell centimeter characteristic curve charge commutator conductor connected in series copper counter E. M. F. current passes decrease deflection density diameter direct current dynamo efficiency electrical efficiency electrical energy electromotive force engine equal external circuit field coils field magnets field strength field winding formula galvanometer gives greater heat Hence horse-power hysteresis increase induced insulation internal resistance joules length lines of force machine magnetic circuit magnetic field magnetic flux magnetic lines magnetizing force measured mechanical metal method multipolar needle number of turns obtained Ohm's law ohms output plate pole pieces position R₁ revolutions per minute rheostat ring rotation series coils series motor shaft shown in Fig shunt dynamo shunt motor Solution speed square inch surface temperature terminals torque total E. M. F. unit voltage voltmeter volts watts Westinghouse wire zinc
Popular passages
Page 19 - Ike current is directly proportional to the electromotive force and inversely proportional to the resistance.
Page 40 - Is the amount of heat required to raise the temperature of 1 pound of water 1° Fahrenheit.
Page 26 - This formula may be stated as follows : The joint resistance of a divided circuit is equal to the product of the two separate resistances divided by their sum.
Page 20 - The units of these quantities, the ampere, volt and ohm, have been so chosen that an electromotive force of 1 volt applied to a resistance of 1 ohm, causes 1 ampere of current to flow. Ohm's law may therefore...
Page 8 - The farad — 10~9 (or one one-thousand-millionth) absolute unit of capacity ; and is the capacity of a condenser which is charged to a potential of one volt by one coulomb of electricity.
Page 8 - When another ring is added, the first will in turn induce a north pole at the top and a south pole at the bottom of the second ring.
Page 8 - As the area of a circle is proportional to the square of its diameter, it follows that the resistances of round conductors are inversely proportional to the squares of their diameters.