Electronic Principles If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage? 36 V 60 V 0 V None of these 40 V 36 V 60 V 0 V None of these 40 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A low-pass filter: has no effect on ac signals passes higher-frequency signals and reduces lower-frequency signals reduces the level of all frequencies by a significant amount None of these passes lower-frequency signals and reduces higher-frequency signals has no effect on ac signals passes higher-frequency signals and reduces lower-frequency signals reduces the level of all frequencies by a significant amount None of these passes lower-frequency signals and reduces higher-frequency signals ANSWER DOWNLOAD EXAMIANS APP
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? 300 mA 208 mA 7.8 mA None of these 200 mA 300 mA 208 mA 7.8 mA None of these 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 7.75 µA None of these 7.8 µA 14.8 µA 10.3 µA 7.75 µA None of these 7.8 µA 14.8 µA 10.3 µA 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? I = P/E None of these P = E2/R P = PR R = E2/P I = P/E None of these P = E2/R P = PR R = E2/P 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? None of these 0.5 4 180 0.25 None of these 0.5 4 180 0.25 ANSWER DOWNLOAD EXAMIANS APP
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