Electronic Principles Which one of the following statements most accurately applies to the frequency of a waveform? The actual frequency of a sine waveform is 1.41 times the working frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The higher the amplitude of a waveform, the higher its frequency None of these The longer the period of a waveform, the lower its frequency The actual frequency of a sine waveform is 1.41 times the working frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The higher the amplitude of a waveform, the higher its frequency None of these The longer the period of a waveform, the lower its frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Most AC power is obtained from: lightning batteries oscillators generators None of these lightning batteries oscillators generators None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When applying a square waveform to a capacitor, the circuit tends to: peak both the voltage and current waveforms None of these peak the voltage and round off the current waveforms peak the current and round off the voltage waveforms round off both the voltage and current waveforms peak both the voltage and current waveforms None of these peak the voltage and round off the current waveforms peak the current and round off the voltage waveforms round off both the voltage and current waveforms ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point down up off the load line nowhere None of these down up off the load line nowhere None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit? Reluctance Permeability Permeance There is no valid comparison Retentivity Reluctance Permeability Permeance There is no valid comparison Retentivity ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf None of these the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf None of these the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core ANSWER DOWNLOAD EXAMIANS APP
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