吉大《电力电子变流技术》在线作业一（Kyrgyzstan power electronics technology a stream of online homework）.doc

吉大《电力电子变流技术》在线作业一（Kyrgyzstan power electronics technology a stream of online homework） Kyrgyzstan power electronics technology a stream of online homework Total score: 100 test time: - A multiple-choice question Judgment question Radio examination , (a total of 5 multiple-choice questions, a total of 20 points.) 1. single phase half wave controlled rectifier circuit resistance load characteristics: (). A. the voltage is directly proportional to the current B. the voltage is inversely proportional to the current C. voltage and current waveform the same D. voltage and current waveform is different Full marks: 4 2. features of multiplex rectifier circuit: (). A. uses the same device to achieve greater transmit power B. uses different devices to achieve greater transmit power C. can increase the power factor and reduce the interference to the power supply network D. can reduce the power factor and reduce the interference to the power supply network Full marks: 4 3. single-phase half wave controlled rectifier circuit inductance load characteristics: (). The inductance of the A. has a driving effect on the current change The B. inductor has a resistance to current changes The current flowing through the inductor of the C. can mutate The current flowing through the inductor of the D. does not mutate Full marks: 4 4. the following are the reasons for the reversal of the subversion. The A. trigger circuit is unreliable B. trigger circuit normal, thyristor fault C. AC power failure D. invert angle is too big Full marks: 4 5., three-phase half wave controlled rectifier circuit of sense resistance load characteristics: (). A. sense resistance load, inductance value is very big B. sense resistance load, inductance value is very small C. Id waveform basically flat The D. Id waveform is nearly positive Full marks: 4 Kyrgyzstan power electronics technology a stream of online homework Total score: 100 test time: - A multiple-choice question Judgment question Radio examination Judgme