Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 9 81 6 85 None of these 9 81 6 85 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage remains at one polarity and at a steady level The voltage causes current to flow in two directions at the same time None of these The voltage remains at one polarity but changes value periodically The voltage reverses polarity periodically The voltage remains at one polarity and at a steady level The voltage causes current to flow in two directions at the same time None of these The voltage remains at one polarity but changes value periodically The voltage reverses polarity periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that has its molecules arranged in a random pattern None of these that would be attracted to the earth's south magnetic pole that would be repelled by the south pole of another magnet that would be attracted to the earth's north magnetic pole that has its molecules arranged in a random pattern None of these that would be attracted to the earth's south magnetic pole that would be repelled by the south pole of another magnet that would be attracted to the earth's north magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles One henry of inductance is defined as: the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the amount of inductance required to change the frequency of a current by 1 Hz the amount of counter emf required to reduce a current to 1 A the number of turns of wire in an inductor multiplied by the amount of current flowing through it None of these the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the amount of inductance required to change the frequency of a current by 1 Hz the amount of counter emf required to reduce a current to 1 A the number of turns of wire in an inductor multiplied by the amount of current flowing through it None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA? 18.8 V 10.17 V 0.17 V 20 V None of these 18.8 V 10.17 V 0.17 V 20 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current can flow through a normally open push button switch as long as: its contact remain open you are not pressing the button you are pressing the button None of these its contact remain open its contact remain open you are not pressing the button you are pressing the button None of these its contact remain open ANSWER DOWNLOAD EXAMIANS APP
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