Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? None of these 24.2 mA 28.4 mA 34.4 mA 68.4 mA None of these 24.2 mA 28.4 mA 34.4 mA 68.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? P = PR R = E2/P P = E2/R I = P/E None of these P = PR R = E2/P P = E2/R I = P/E None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio for the transformer specified in the above question? 1.5 10.738 0.707 0.575 None of these 1.5 10.738 0.707 0.575 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Voltmeter Wattmeter Ammeter None of these Ohmmeter Voltmeter Wattmeter Ammeter None of these Ohmmeter 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 The core of an electromagnet is said to be in saturation when: changing the polarity of the current in the coil changes the polarity of the magnetic field around the core 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 an increase in current through the coil causes no further increase in the mmf changing the polarity of the current in the coil changes the polarity of the magnetic field around the core 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 an increase in current through the coil causes no further increase in the mmf ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS