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? 600 V 0.4 V None of these 4.73 24 V 600 V 0.4 V None of these 4.73 24 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Like magnetic poles attract, while unlike poles repel Like magnetic poles repel, while unlike poles attract Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field None of these Like magnetic poles attract, while unlike poles repel Like magnetic poles repel, while unlike poles attract Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the time required to complete one full cycle equal to 0.707 times the peak amplitude None of these the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second the time required to complete one full cycle equal to 0.707 times the peak amplitude None of these the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Primary voltage Secondary voltage Neither None of these Impossible to say Primary voltage Secondary voltage Neither None of these Impossible to say ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How many protons does the nucleus of a silicon atom contain? None of these 29 4 48 14 None of these 29 4 48 14 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it? None of these E = I2R I = E/R I = ER E = PR None of these E = I2R I = E/R I = ER E = PR ANSWER DOWNLOAD EXAMIANS APP
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