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? None of these 4.73 600 V 24 V 0.4 V None of these 4.73 600 V 24 V 0.4 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance? None of these P = I2R P = IE P = E2/R I = P/E None of these P = I2R P = IE P = E2/R I = P/E 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 the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these 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 the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these an increase in current through the coil causes no further increase in the mmf ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical into electrical energy is? None of these chemical cell solar cell thermocouple generator None of these chemical cell solar cell thermocouple generator ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: solar cell None of these chemical cell thermocouple piezoelectric devices solar cell None of these chemical cell thermocouple piezoelectric devices ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 18 V 24 V 12 V 30 V None of these 18 V 24 V 12 V 30 V None of these ANSWER DOWNLOAD EXAMIANS APP
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