Electronic Principles Current is An imbalance of electrical charges The number of free electrons in an atom None of these The force that causes electrons to flow The flow of charged particles through a material An imbalance of electrical charges The number of free electrons in an atom None of these The force that causes electrons to flow The flow of charged particles through a material 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 None of these The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time The voltage reverses polarity periodically The voltage remains at one polarity and at a steady level None of these The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time The voltage reverses polarity periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current can flow through a normally open push button switch as long as: None of these its contact remain open you are not pressing the button you are pressing the button its contact remain open None of these its contact remain open you are not pressing the button you are pressing the button its contact remain open ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question? 200 W 20 W 100 W None of these 1000 W 200 W 20 W 100 W None of these 1000 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.6 A 0.2 A 0.3 A None of these 0.4 A 0.6 A 0.2 A 0.3 A None of these 0.4 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff voltage source has a resistance of More than 100 k Ohm less than 10 Ohm None of these At least 10 Ohm Less than 100 k Ohm More than 100 k Ohm less than 10 Ohm None of these At least 10 Ohm Less than 100 k Ohm ANSWER DOWNLOAD EXAMIANS APP
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