Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? Combinations of resistance and inductive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree Combinations of resistance and inductive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff voltage source has a resistance of More than 100 k Ohm less than 10 Ohm Less than 100 k Ohm None of these At least 10 Ohm More than 100 k Ohm less than 10 Ohm Less than 100 k Ohm None of these At least 10 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: has no effect on the inductive reactance multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance None of these cuts the inductive reactance in half has no effect on the inductive reactance multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance None of these cuts the inductive reactance in half ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A loadstone is: a paramagnetic alloy a natural magnet an artificial magnet None of these a temporary magnet a paramagnetic alloy a natural magnet an artificial magnet None of these a temporary magnet ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best describes magnetic hysteresis? None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Ammeter Wattmeter Ohmmeter Voltmeter None of these Ammeter Wattmeter Ohmmeter Voltmeter None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS