吉大《工厂供电》在线作业一（Kyrgyzstan power plant online homework）.doc

吉大《工厂供电》在线作业一（Kyrgyzstan power plant online homework） Kyrgyzstan power plant online homework Total score: 100 test time: - Radio examination A multiple-choice question Judgment question Radio examination questions (5 questions, 20 points) 1., the voltage deviation will not affect the synchronous motor. A. speed B. current C. temperature rise D. torque Full marks: 4 2. the power supply line voltage of the medium-sized factories is (). A. 220V B. 380V C. 6-10kV D. 35kV above Full marks: 4 3.. The neutral point of power supply in our countrys 110kV and over high voltage system is usually adopted. A. direct grounding mode B. ungrounded operation mode C. indirect grounding mode D. grounding by arc suppression coil Full marks: 4 Rated voltage of 4. generator (). A. higher than the rated voltage of the same grid 5% B. is equal to the rated voltage of the same power grid C. is lower than the rated voltage of the same grade grid 5% D. higher than the rated voltage of the same grid 13% Full marks: 4 5. the rated voltage of the primary winding of the power transformer is not directly connected with the generator. A. higher than the rated voltage of the same grid 5% B. is equal to the rated voltage of the same power grid C. is lower than the rated voltage of the same grade grid 5% D. higher than the rated voltage of the same grid 11% Full marks: 4 Kyrgyzstan power plant online homework Total score: 100 test time: - Radio examination A multiple-choice question Judgment question , (a total of 5 multiple-choice questions, a total of 20 points.) 1. what are the advantages of building a large power system?. A. reduces fuel transportation costs B. reduces power generation costs C. guarantee the quality of power supply D. improves power supply reliability Full marks: 4 2. protection line function (). A. safeguards personal safety B. prevents grounding wires for electric shock accidents C. conduction unbalance current D. reduces the potential shift at the load neutral point Full marks: