Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 12 V 24 V None of these 18 V 30 V 12 V 24 V None of these 18 V 30 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 85 6 9 81 None of these 85 6 9 81 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the barrier potential of a silicon diode at room temperature? None of these 2 m V per degree Celsius 1 V 0.7V 0.3V None of these 2 m V per degree Celsius 1 V 0.7V 0.3V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? None of these The amount of magnetic flux that is not confined to the core material of an electromagnet The circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field Magnetism that remains in the core of an electromagnet after the current through the coil is turned off None of these The amount of magnetic flux that is not confined to the core material of an electromagnet The circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field Magnetism that remains in the core of an electromagnet after the current through the coil is turned off ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit? Permeability There is no valid comparison Retentivity Reluctance Permeance Permeability There is no valid comparison Retentivity Reluctance Permeance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a parallel circuit? The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage in a parallel circuit is equal to the average value of the individual voltages The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit None of these The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage in a parallel circuit is equal to the average value of the individual voltages The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit None of these ANSWER DOWNLOAD EXAMIANS APP
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