Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? 600 V 24 V None of these 4.73 0.4 V 600 V 24 V None of these 4.73 0.4 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W? 3890 Ohm None of these 692.2 Ohm 844.5 Ohm 1234 Ohm 3890 Ohm None of these 692.2 Ohm 844.5 Ohm 1234 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the number of cycles completed in one second the time required for the voltage to rise from 10% to 90% of the peak amplitude equal to 0.707 times the peak amplitude None of these the time required to complete one full cycle the number of cycles completed in one second the time required for the voltage to rise from 10% to 90% of the peak amplitude equal to 0.707 times the peak amplitude None of these the time required to complete one full cycle ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the barrier potential of a silicon diode at room temperature? None of these 2 m V per degree Celsius 0.7V 1 V 0.3V None of these 2 m V per degree Celsius 0.7V 1 V 0.3V 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 has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole None of these that would be attracted to the earths north magnetic pole that would be repelled by the north pole of another magnet that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole None of these that would be attracted to the earths north magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms are both ac or both dc All of these they have the same amplitude and frequency None of these their waveforms cross through zero and reach positive and negative peaks at the same time their waveforms are both ac or both dc All of these they have the same amplitude and frequency None of these their waveforms cross through zero and reach positive and negative peaks at the same time ANSWER DOWNLOAD EXAMIANS APP
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