Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel, while unlike poles attract Like magnetic poles attract, while unlike poles repel None of these Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel, while unlike poles attract Like magnetic poles attract, while unlike poles repel None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: None of these has no effect on the capacitive reactance cuts the capacitive reactance in half doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 None of these has no effect on the capacitive reactance cuts the capacitive reactance in half doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltages in a series RC circuit? None of these The total voltage is greater than the sum of the voltages across the resistance and capacitance The voltage always has the same amplitude and phase for every part of the circuit The total voltage is equal to the sum of the voltages across the resistance and capacitance The total voltage is less than the sum of the voltages across the resistance and capacitance None of these The total voltage is greater than the sum of the voltages across the resistance and capacitance The voltage always has the same amplitude and phase for every part of the circuit The total voltage is equal to the sum of the voltages across the resistance and capacitance The total voltage is less than the sum of the voltages across the resistance and capacitance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: doubles the amount of inductive reactance cuts the inductive reactance in half None of these multiplies the inductive reactance by 6.28 has no effect on the inductive reactance doubles the amount of inductive reactance cuts the inductive reactance in half None of these multiplies the inductive reactance by 6.28 has no effect on the inductive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating below its resonant frequency, a parallel RLC circuit has the characteristics of a: None of these purely resistive circuit parallel RL circuit parallel RLC circuit operated above its resonant frequency parallel RC circuit None of these purely resistive circuit parallel RL circuit parallel RLC circuit operated above its resonant frequency parallel RC circuit 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 12 V 30 V None of these 24 V 18 V 12 V 30 V None of these 24 V ANSWER DOWNLOAD EXAMIANS APP
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