One question per day (1128)
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This post was last edited by Wang Tianze on 2015-11-30 at 20:18. One question per day – since it involves electrical engineering knowledge, it was initially published on the dashboard; starting from 12.01, it will be posted on the electrical engineering section. 50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Cannot be determined 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention Closed
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Cannot be determined 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Cannot be determined 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. 51. The main measure to prevent static electricity is (A).
49, B. 50, A,
50. For a three-phase asynchronous motor to operate stably, the slip rate should be ( ) the critical slip rate. B. Less than 51. The main measure to prevent static electricity is ( ). A. Grounding
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Cannot be determined 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Indeterminable 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention
B. Less than. For a three-phase asynchronous motor to operate stably, its slip rate must be (less than) the critical slip rate. A. Grounding. The main measure to prevent static electricity is (A) grounding
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Indeterminable 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention
50. For a three-phase asynchronous motor to operate stably, the slip rate should be (B) the critical slip rate. A. Greater than B. Less than C. Equal to D. Cannot be determined 51. The main measure to prevent static electricity is (A). A. Grounding B. Ventilation C. Drying protection D. Moisture prevention