Electronic Principles Which is the most widely used semiconductor? Silicon Copper Germanium None of these All of these Silicon Copper Germanium None of these All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.6 A 0.2 A None of these 0.4 A 0.3 A 0.6 A 0.2 A None of these 0.4 A 0.3 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? P = E2/R P = I2R None of these P = IE I = P/E P = E2/R P = I2R None of these P = IE I = P/E ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? None of these Ohmmeter Ammeter Voltmeter Wattmeter None of these Ohmmeter Ammeter Voltmeter Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? None of these Resistances provide the only opposition to current flow Inductive reactance provides the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow The ac voltage lags the current by 90 degree None of these Resistances provide the only opposition to current flow Inductive reactance provides the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow The ac voltage lags the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? 60 Ohm None of these 754 Ohm 30 Ohm 120 Ohm 60 Ohm None of these 754 Ohm 30 Ohm 120 Ohm ANSWER DOWNLOAD EXAMIANS APP
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