Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? None of these 707 V 700 V 651 V 208 V None of these 707 V 700 V 651 V 208 V ANSWER DOWNLOAD EXAMIANS APP
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 None of these 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 Combinations of resistance and inductive reactance provide any 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 Resistances provide the only opposition to current flow ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from 10% of the peak value to 70.7% of the peak value from zero to its peak value from zero to its rms value None of these from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value from zero to its peak value from zero to its rms value None of these from 10% of the peak value to 90% of the peak value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: None of these doubles the amount of total current has no effect on the total circuit current thrice the amount of total current cuts the total current by one-half None of these doubles the amount of total current has no effect on the total circuit current thrice the amount of total current cuts the total current by one-half ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical into electrical energy is? None of these thermocouple generator chemical cell solar cell None of these thermocouple generator chemical cell solar cell ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? None of these 100 A 1000 A 0.1 A 0.41666666666667 None of these 100 A 1000 A 0.1 A 0.41666666666667 ANSWER DOWNLOAD EXAMIANS APP
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