Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage reverses polarity periodically The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time None of these The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time None of these The voltage remains at one polarity and at a steady level ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is a free electron? None of these An electron that has been freed from its parent atom An electron that has twice the amount of charge of a normal electron An electron that costs nothing An electron that has no electrical charge None of these An electron that has been freed from its parent atom An electron that has twice the amount of charge of a normal electron An electron that costs nothing An electron that has no electrical charge ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 410 Ohm 310 Ohm 550 Ohm None of these 400 Ohm 410 Ohm 310 Ohm 550 Ohm None of these 400 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio for the transformer specified in the above question? 1.5 0.575 None of these 0.707 10.738 1.5 0.575 None of these 0.707 10.738 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles 1 Microfarad is the same as: 1 million farads 1000 millifarads 1 millionth of a picofarad 1 million picofarads None of these 1 million farads 1000 millifarads 1 millionth of a picofarad 1 million picofarads None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is None of these The force that causes electrons to flow The number of free electrons in an atom The flow of charged particles through a material An imbalance of electrical charges None of these The force that causes electrons to flow The number of free electrons in an atom The flow of charged particles through a material An imbalance of electrical charges ANSWER DOWNLOAD EXAMIANS APP
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