78. Synchronous motors are
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79. The standard full-load power factor ratings for synchronous motors are
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80. A synchronous motor running with normal excitation adjusts to load increases essentially by increase in
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81. A synchronous motor has better power factors as compared to that of an equivalent induction motor. This is mainly because
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82. Asynchronous motor working at leading power factor can be used as
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83. Slip rings are usually made of
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84. An over-excited synchronous motor is used for
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