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 15 V 16 V 7.5 V None of these 8 V 15 V 16 V 7.5 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the amplitude at 90% of the maximum value the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value None of these the maximum positive or negative value the amplitude at 90% of the maximum value the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value None of these the maximum positive or negative value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core 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? None of these 700 V 707 V 651 V 208 V None of these 700 V 707 V 651 V 208 V 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? Reluctance Permeance Permeability There is no valid comparison Retentivity Reluctance Permeance Permeability There is no valid comparison Retentivity ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 kV is: 1000 mV 100 mV 1000 V 1.00 V None of these 1000 mV 100 mV 1000 V 1.00 V None of these ANSWER DOWNLOAD EXAMIANS APP
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