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, but changes value periodically The current in an ac circuit changes direction periodically None of these The current in an ac circuit flows in one direction at a steady level 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 None of these The current in an ac circuit flows in one direction at a steady level The current in an ac circuit flows in two directions at the same time ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used for creating static electricity? Solar energy None of these Light energy Mechanical energy Chemical energy Solar energy None of these Light energy Mechanical energy Chemical energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much power is being dissipated by a 1000 W resistance that has 25 V applied to it? 0.24 W 80 W 325 kW None of these 0.625 W 0.24 W 80 W 325 kW None of these 0.625 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow None of these Capacitive reactance provides the only opposition to current flow The ac voltage leads the current by 90 degree Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow None of these Capacitive reactance provides the only opposition to current flow The ac voltage leads the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.75 mA 3.2 mA 13 mA 0.05 mA None of these 3.75 mA 3.2 mA 13 mA 0.05 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How may valence electrons does a silicon atom have? 1 None of these 2 4 1 None of these 2 4 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS