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? 4.73 0.4 V 600 V 24 V None of these 4.73 0.4 V 600 V 24 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? None of these 445 ohm 220 ohm 690 ohm 150 ohm None of these 445 ohm 220 ohm 690 ohm 150 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The value of a capacitor can be made larger by: increasing the frequency of the applied voltage None of these decreasing the area of the plates increasing the area of the plates increasing the voltage applied to the plates increasing the frequency of the applied voltage None of these decreasing the area of the plates increasing the area of the plates increasing the voltage applied to the plates ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating voltage of a purely capacitive circuit: multiplies the capacitive reactance by 7 doubles the amount of capacitive reactance has no effect on the capacitive reactance None of these cuts the capacitive reactance in half multiplies the capacitive reactance by 7 doubles the amount of capacitive reactance has no effect on the capacitive reactance None of these cuts the capacitive reactance in half ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 0.05 mA 3.2 mA None of these 13 mA 3.75 mA 0.05 mA 3.2 mA None of these 13 mA 3.75 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? Number of lines of force Magnetomotive force Flux density None of these Reluctance Number of lines of force Magnetomotive force Flux density None of these Reluctance ANSWER DOWNLOAD EXAMIANS APP
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