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 The current in an ac circuit changes direction periodically The current in an ac circuit flows in two directions at the same time None of these The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in one direction at a steady level The current in an ac circuit changes direction periodically The current in an ac circuit flows in two directions at the same time None of these The current in an ac circuit flows in one direction, but changes value periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A high-pass filter: passes lower-frequency signals and reduces higher-frequency signals increases the level of all frequencies by a significant amount None of these passes higher-frequency signals and reduces lower-frequency signals has no effect on ac signals passes lower-frequency signals and reduces higher-frequency signals increases the level of all frequencies by a significant amount None of these passes higher-frequency signals and reduces lower-frequency signals has no effect on ac signals ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Silicon atoms combine into an orderly pattern called a Covalent bond Semiconductor None of these Valence orbit Crystal Covalent bond Semiconductor None of these Valence orbit Crystal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the None of these emitter current supply current collector current base current None of these emitter current supply current collector current base current 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? 4 180 0.25 0.5 None of these 4 180 0.25 0.5 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely inductive circuit: increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit doubles the amount of current through the inductors has no effect on the current through the inductors cuts the current through the inductors one-half None of these increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit doubles the amount of current through the inductors has no effect on the current through the inductors cuts the current through the inductors one-half None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS