Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? Number of lines of force None of these Flux density Reluctance Magnetomotive force Number of lines of force None of these Flux density Reluctance Magnetomotive force 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? None of these 180 0.25 4 0.5 None of these 180 0.25 4 0.5 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A farad is defined as the amount of capacitance necessary for: changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing None of these dissipating 1 W of power causing an ac phase shift greater than 90 degree storing 1 V for 1 second changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing None of these dissipating 1 W of power causing an ac phase shift greater than 90 degree storing 1 V for 1 second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has A large internal resistance Infinite internal resistance Zero internal resistance A small internal resistance None of these A large internal resistance Infinite internal resistance Zero internal resistance A small internal resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? Resistances provide the only opposition to current flow None of these Combinations of resistance and inductive reactance provide any opposition to current flow Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree Resistances provide the only opposition to current flow None of these Combinations of resistance and inductive reactance provide any opposition to current flow Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Wattmeter Voltmeter None of these Ohmmeter Ammeter Wattmeter Voltmeter None of these Ohmmeter Ammeter ANSWER DOWNLOAD EXAMIANS APP
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