A conductor made out of what material is allowed to carry the most current, assuming that size and insulation type are held constant? - copper, Materials that increase their resistance with an increase of temperature have a ________coefficient of temperature._ - positive, ________________ loss is caused by the continuous aligning and realigning of molecules, which produces heat due to friction. - Hysteresis, In a machine that has a 3-phase motor rated at 460 volts, the current required by that machine is based on the ______ of the motor. - horsepower rating, Direct-current compound motors contain a rotating armature and a(n) _________ field. - stationary, Most dual-voltage motors bring out _______ “T” leads at the terminal box. - nine, The speed of the rotating magnetic field of a polyphase ac motor is called ________ speed. - synchronous, Most dual-voltage single-phase motors will be of the _______ type, which contains both run and starting windings. - split-phase, The speed of the wound-rotor induction motor can be controlled by the amount of _______ connected in the rotor circuit. - resistance, The _______ operates like an electric check valve; it permits the current to flow through it in only one direction. - diode,

mta midterm recap

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?