Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? None of these 85 9 81 6 None of these 85 9 81 6 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current is converted to dc voltage ac current leads the voltage by 90 degree None of these ac current lags the voltage by 90 degree ac current and voltage are exactly in phase ac current is converted to dc voltage ac current leads the voltage by 90 degree None of these ac current lags the voltage by 90 degree ac current and voltage are exactly in phase ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The south pole of a magnet is the one: that would be repelled by the north pole of another magnet that would be attracted to the earths north magnetic pole None of these that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole that would be repelled by the north pole of another magnet that would be attracted to the earths north magnetic pole None of these that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: None of these their waveforms are both ac or both dc their waveforms cross through zero and reach positive and negative peaks at the same time All of these they have the same amplitude and frequency None of these their waveforms are both ac or both dc their waveforms cross through zero and reach positive and negative peaks at the same time All of these they have the same amplitude and frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like an insulator None of these a piece of copper wire a conductor a battery an insulator None of these a piece of copper wire a conductor a battery ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current? None of these 1.75 mA 1750 mA 17.5 mA 175 mA None of these 1.75 mA 1750 mA 17.5 mA 175 mA ANSWER DOWNLOAD EXAMIANS APP
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