Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 81 6 9 85 None of these 81 6 9 85 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Reducing the amount of current through an inductor: reduces the value of inductance by one-half multiplies the value of inductance by two multiplies the value of inductance by four None of these has no effect on the inductance reduces the value of inductance by one-half multiplies the value of inductance by two multiplies the value of inductance by four None of these has no effect on the inductance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 4 0.5 180 None of these 0.25 4 0.5 180 None of these 0.25 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately applies to the frequency of a waveform? None of these Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The actual frequency of a sine waveform is 1.41 times the working frequency The longer the period of a waveform, the lower its frequency The higher the amplitude of a waveform, the higher its frequency None of these Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The actual frequency of a sine waveform is 1.41 times the working frequency The longer the period of a waveform, the lower its frequency The higher the amplitude of a waveform, the higher its frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a series RLC circuit: is minimum at the resonant frequency always increases as the applied frequency increases always decreases as the applied frequency increases is maximum at the resonant frequency None of these is minimum at the resonant frequency always increases as the applied frequency increases always decreases as the applied frequency increases is maximum at the resonant frequency None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How many types of flow are there in a semiconductor? 3 2 None of these 1 3 2 None of these 1 ANSWER DOWNLOAD EXAMIANS APP
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