Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 9 6 None of these 81 85 9 6 None of these 81 85 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 7.8 mA 300 mA 208 mA 200 mA None of these 7.8 mA 300 mA 208 mA 200 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? None of these 0.4 V 24 V 4.73 600 V None of these 0.4 V 24 V 4.73 600 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? 628 Ohm 444 Ohm 100 Ohm None of these Less than 1 Ohm 628 Ohm 444 Ohm 100 Ohm None of these Less than 1 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rotating coil of wire in an electric motor is called the: commutator loop None of these armature brush commutator loop None of these armature brush ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitance of a series capacitor circuit is: equal to the sun of the individual capacitive-reactance values None of these equal to the source voltage divided by total current less than the value of the smallest capacitor equal to the sum of the individual capacitance values equal to the sun of the individual capacitive-reactance values None of these equal to the source voltage divided by total current less than the value of the smallest capacitor equal to the sum of the individual capacitance values ANSWER DOWNLOAD EXAMIANS APP
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