Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit flows in one direction at a steady level None of these The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction at a steady level None of these The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit changes direction periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 2.02 A 0.955 A 0.41666666666667 None of these 0.02 A 2.02 A 0.955 A 0.41666666666667 None of these 0.02 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? 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 Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 megohms is: 100,000 ohm one million ohms None of these 1 k ohm one-millionth of an ohm 100,000 ohm one million ohms None of these 1 k ohm one-millionth of an ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source? None of these 157 raA 2.02 A 0.995 mA 0.151 mA None of these 157 raA 2.02 A 0.995 mA 0.151 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 0.25 0.5 None of these 4 180 0.25 0.5 None of these 4 180 ANSWER DOWNLOAD EXAMIANS APP
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