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Assignment Questions - 14177_119

Neets Module 05-Introduction to Generators and Motors
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8 1-64.   In a two-phase motor stator, what is the angular displacement between the field poles? 1.         0º 2.      90º 3. 180º 4. 360º 1-65.   Adjacent phase windings of a 3-phase motor stator are what total number of degrees apart? 1.      30º 2.      90º 3. 120º 4. 180º 1-66.   Which of the following types of motors has a constant speed from no load to full load? 1.    Series 2.    Synchronous 3.    Induction 4.    Universal 1-67.   What type of ac motor is the simplest and least expensive to manufacture? 1.    Induction 2.    Series 3.    Synchronous 4.    Two-phase 1-68.   What term applies to the difference between the speed of the rotating stator field and the rotor speed? 1.    Slip 2.    Synchronous 3.    Rotor error 4.    Torque 1-69.   The speed of the rotor of an induction motor depends upon which of the following factors? 1.    The method of connecting the load 2.    The dc voltage applied to the rotor 3.    The torque requirements of the load 4.    The current in the rotor 1-70.   What type of ac motor is most widely used? 1.    Series 2.    Universal 3.    Synchronous 4.    Single-phase induction 1-71.   What type of ac motor uses a combination of inductance and capacitance to apply out-of-phase currents to the start windings? 1.    Three-phase 2.    Series 3.    Synchronous 4.    Split-phase induction 1-72.   Why are shaded-pole motors built only in small sizes? 1.    They have weak starting torque 2.    They are expensive in large sizes 3.    They are unidirectional 4.    They require large starting current






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