Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow None of these The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rotating coil of wire in an electric motor is called the: commutator armature None of these brush loop commutator armature None of these brush loop ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature 0oC None of these Increases Decreases Stays the same 0oC None of these Increases Decreases Stays the same ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? None of these 0.25 µA 250 µA 350 µA 300 µA None of these 0.25 µA 250 µA 350 µA 300 µA 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? 30 V None of these 18 V 12 V 24 V 30 V None of these 18 V 12 V 24 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which is the most widely used semiconductor? All of these Silicon Copper Germanium None of these All of these Silicon Copper Germanium None of these ANSWER DOWNLOAD EXAMIANS APP
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