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 None of these 300 mA 208 mA 200 mA 7.8 mA None of these 300 mA 208 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W? 844.5 Ohm 1234 Ohm 3890 Ohm None of these 692.2 Ohm 844.5 Ohm 1234 Ohm 3890 Ohm None of these 692.2 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation? 200 mW 300 mW 20 mW None of these 10 mW 200 mW 300 mW 20 mW None of these 10 mW ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the currents in a parallel RL circuit? The current always has the same amplitude and phase for every part of the circuit The total current is equal to the sum of the currents through the resistance and inductance The total current is less than the sum of the currents through the resistance and inductance The total current leads the total voltage by less than 90 None of these The current always has the same amplitude and phase for every part of the circuit The total current is equal to the sum of the currents through the resistance and inductance The total current is less than the sum of the currents through the resistance and inductance The total current leads the total voltage by less than 90 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Inductive reactance is measured in units of: None of these amperes per second henrys volts per second Ohm None of these amperes per second henrys volts per second Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff? 30 Ohm 20 Ohm 100 Ohm None of these 10 Ohm 30 Ohm 20 Ohm 100 Ohm None of these 10 Ohm ANSWER DOWNLOAD EXAMIANS APP
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