71. Synchronous motors are
72. The standard full-load power factor ratings for synchronous motors are
73. If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then
74. The speed regulation of a synchronous motor is always
75. The construction of a synchronous motor resembles
76. A three-phase synchronous motor will have
77. The operating speed of a synchronous motor can be changed to new fixed value by
78. The minimum armature current of the synchronous motor corresponds to operation at
79. If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then
80. A synchronous motor can be started by
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