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? 208 mA 7.8 mA None of these 300 mA 200 mA 208 mA 7.8 mA None of these 300 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a series RLC circuit: is minimum at the resonant frequency is maximum at the resonant frequency None of these always decreases as the applied frequency increases always increases as the applied frequency increases is minimum at the resonant frequency is maximum at the resonant frequency None of these always decreases as the applied frequency increases always increases as the applied frequency increases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Voltmeter Ohmmeter Wattmeter Ammeter None of these Voltmeter Ohmmeter Wattmeter Ammeter None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit? 1000 V and a parallel resistance of 10 kOhm None of these 100 V and a parallel resistance of 10 k Ohm 1000 V and a series resistance of 10 k Ohm 100 V and a series resistance of 10 k Ohm 1000 V and a parallel resistance of 10 kOhm None of these 100 V and a parallel resistance of 10 k Ohm 1000 V and a series resistance of 10 k Ohm 100 V and a series resistance of 10 k Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? 628 Ohm None of these Less than 1 Ohm 444 Ohm 100 Ohm 628 Ohm None of these Less than 1 Ohm 444 Ohm 100 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value? 37.4 V 30.4 V None of these 38.74 V 35.4 V 37.4 V 30.4 V None of these 38.74 V 35.4 V ANSWER DOWNLOAD EXAMIANS APP
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