85. When the voltage applied to a synchronous motor is increased, which of the following will reduce?
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86. The speed of the synchronous motor
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87. Dust and dirt accumulation on motor winding will result in
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88. The efficiency of a properly desiged synchronous motor will usually fall in range
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89. To limit the operating temperature an electrical machine should have proper
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90. Slip-rings in a synchronous motor carry
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91. A synchronous machine with large air gap has
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