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 200 mA 7.8 mA None of these 300 mA 208 mA 200 mA 7.8 mA None of these 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Neither Secondary voltage Impossible to say Primary voltage None of these Neither Secondary voltage Impossible to say Primary voltage 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 a capacitor that has a reactance of 100 ohm? 60 Ohm None of these 99.3 Ohm 70.7Ohm 250 Ohm 60 Ohm None of these 99.3 Ohm 70.7Ohm 250 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the currents in a parallel RL circuit? None of these The total current is equal to the sum of the currents through the resistance and inductance The total current is less than the sum of the currents through the resistance and inductance The current always has the same amplitude and phase for every part of the circuit The total current leads the total voltage by less than 90 None of these The total current is equal to the sum of the currents through the resistance and inductance The total current is less than the sum of the currents through the resistance and inductance The current always has the same amplitude and phase for every part of the circuit The total current leads the total voltage by less than 90 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts light energy to electrical energy is called a: photo transistor None of these photodiode solar cell thermocouple photo transistor None of these photodiode solar cell thermocouple ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage? 16 V 8 V 7.5 V None of these 15 V 16 V 8 V 7.5 V None of these 15 V ANSWER DOWNLOAD EXAMIANS APP
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