3-22ANSWERS TO QUESTIONS Q1. THROUGH Q21.A1.A conductor and a magnetic field.A2.Armature.A3.Rotating armature and rotating field.A4.Output voltage is taken directly from the armature (not through brushes or slip rings).A5.To provide dc current for the rotating field.A6.Kilovolt-amperes (volt amperes).A7.Steam turbine.A8.Internal combustion engines, water force and electric motors.A9.One voltage (one output).A10.In series.A11.Placement of armature coils.A12.Three.A13.C is 1.414 times greater than A or B.A14.Each phase is displaced 120º from the other two.A15.Wye and Delta.A16.Three single-phase, delta-delta, step-down transformers.A17.Speed of rotation and number of poles.A18.120 Hz.A19.Voltage regulation. As a percentage.A20.By varying the voltage applied to the field windings.A21.Output voltage, frequency, and phase relationships.
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