Electronic Principles What is one important thing transistors do? Regulate voltage Amplify weak signals Emit light None of these Rectify line voltage Regulate voltage Amplify weak signals Emit light None of these Rectify line voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? None of these The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow None of these The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What kind of device is a diode? Unipolar Nonlinear None of these Linear Bilateral Unipolar Nonlinear None of these Linear Bilateral 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? 707 V 651 V 208 V None of these 700 V 707 V 651 V 208 V None of these 700 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the maximum positive or negative value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the amplitude at 1.41 times the maximum value None of these the maximum positive or negative value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the amplitude at 1.41 times the maximum value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If the current gain is 200 and the collector current is 100 mA, the base current is 2 mA None of these 200 A 0.5 mA 0.083333333333333 2 mA None of these 200 A 0.5 mA 0.083333333333333 ANSWER DOWNLOAD EXAMIANS APP
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