Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 7.8 mA 208 mA 200 mA 300 mA None of these 7.8 mA 208 mA 200 mA 300 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W? 224 ohm 89.3 ohm None of these 77.7 ohm 88.8 ohm 224 ohm 89.3 ohm None of these 77.7 ohm 88.8 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a series RLC circuit: always decreases as the applied frequency increases is minimum at the resonant frequency is maximum at the resonant frequency always increases as the applied frequency increases None of these always decreases as the applied frequency increases is minimum at the resonant frequency is maximum at the resonant frequency always increases as the applied frequency increases None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? 64 W 6 W 122 W 3 W None of these 64 W 6 W 122 W 3 W None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The value of a capacitor can be made larger by: increasing the voltage applied to the plates None of these decreasing the area of the plates increasing the frequency of the applied voltage increasing the area of the plates increasing the voltage applied to the plates None of these decreasing the area of the plates increasing the frequency of the applied voltage increasing the area of the plates ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating above its resonant frequency, a series RLC circuit has the characteristics of a: series RLC circuit operated below its resonant frequency series RL circuit purely resistive circuit None of these series RC circuit series RLC circuit operated below its resonant frequency series RL circuit purely resistive circuit None of these series RC circuit ANSWER DOWNLOAD EXAMIANS APP
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