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? 7.8 mA None of these 300 mA 208 mA 200 mA 7.8 mA None of these 300 mA 208 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A low-pass filter: passes lower-frequency signals and reduces higher-frequency signals reduces the level of all frequencies by a significant amount has no effect on ac signals passes higher-frequency signals and reduces lower-frequency signals None of these passes lower-frequency signals and reduces higher-frequency signals reduces the level of all frequencies by a significant amount has no effect on ac signals passes higher-frequency signals and reduces lower-frequency signals None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 3 43922 43891 None of these 2 3 43922 43891 None of these 2 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The Thevenin resistance is equal in value to the Internal resistance of a Morton circuit Open-load resistance Load resistance None of these Half the load resistance Internal resistance of a Morton circuit Open-load resistance Load resistance None of these Half the load resistance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 60-W light bulb that is operating at 120 V? 0.083333333333333 7200 A None of these 180 A 0.5A 0.083333333333333 7200 A None of these 180 A 0.5A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles For normal operation of the transistor, the collector diode has to be Forward-biased Reverse-biased Nonconducting None of these Operating in the breakdown region Forward-biased Reverse-biased Nonconducting None of these Operating in the breakdown region ANSWER DOWNLOAD EXAMIANS APP
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