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109年 - 109 國立臺灣大學_碩士班招生考試_電機工程研究所乙組:電力工程(含電力系統、電機機械、電力電子)#105857
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題組內容
[7] True or False [20 pts]
7b. Average power is equivalent to real power, and RMS power is equivalent to reactive power. [2 pts]
相關申論題
7c. For a periodic waveform, the average valuc will always be the same or lower than the RMS value. [2 pts]
#451253
7d. For a periodic waveform, the maximum theoretical value for total harmonic distortion (THD) is 1. [2 pts]
#451254
7e. In the square-wave shown below, the amplitude of the fundamental' component is larger than A. [2 pts]
#451255
7f. The total harmonic distortion (THD) of a pure square wave (50% duty) is the same regardless of frequency and amplitude. [2 pts]
#451256
7g. For a diode rectification circuit with a resistive and inductive (R-L) load, the instantaneous output voltage (over the load) may become negative. [2 pts]
#451257
7h.Th. For an ideal buck converter operating in disco ontinuous conduction m node (DCM), the input- to-output voltage relationship does not depend on the output capacitor value C. [2 pts]
#451258
7i. A half-bridge inverter creates 2 different voltages over the output, while the full-bridge inverter creates 4 different voltages over the output. [2 pts]
#451259
7j. For a flyback converter, ideally, the coupled inductor has zero magnetizing inductance. [2 pts]
#451260
8a. Name two converter topologies with galvanic isolation between input and output. [2 pt].
#451261
8b. Explain why galvanic isolation is sometimes required and give a specific example. [2 pts]
#451262
相關試卷
110年 - 110 國立臺灣大學_碩士班招生考試_電機工程研究所乙組:電力工程(含電力系統、電機機械、電力電子)#101255
110年 · #101255
109年 - 109 國立臺灣大學_碩士班招生考試_電機工程研究所乙組:電力工程(含電力系統、電機機械、電力電子)#105857
109年 · #105857
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