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? 8 V 7.5 V None of these 15 V 16 V 8 V 7.5 V None of these 15 V 16 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 700 V 707 V 208 V None of these 651 V 700 V 707 V 208 V None of these 651 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? P = E2/R P = PR R = E2/P None of these I = P/E P = E2/R P = PR R = E2/P None of these I = P/E ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements regarding ac circuits is correct? Current and voltages are in phase through a resistor None of these All of these Current leads the voltage through a resistor Current lags the voltage through a resistor Current and voltages are in phase through a resistor None of these All of these Current leads the voltage through a resistor Current lags the voltage through a resistor 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? Permeability Retentivity Reluctance There is no valid comparison Permeance Permeability Retentivity Reluctance There is no valid comparison Permeance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 250 µA 0.25 µA None of these 350 µA 300 µA 250 µA 0.25 µA None of these 350 µA 300 µA ANSWER DOWNLOAD EXAMIANS APP
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