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 208 mA None of these 300 mA 200 mA 7.8 mA 208 mA None of these 300 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 megohms is: 1 k ohm 100,000 ohm one-millionth of an ohm None of these one million ohms 1 k ohm 100,000 ohm one-millionth of an ohm None of these one million ohms ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value? 30.4 V 38.74 V 37.4 V None of these 35.4 V 30.4 V 38.74 V 37.4 V None of these 35.4 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 None of these Less than 1 Ohm 100 Ohm 444 Ohm 628 Ohm None of these Less than 1 Ohm 100 Ohm 444 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitance of a series capacitor circuit is: equal to the source voltage divided by total current None of these equal to the sun of the individual capacitive-reactance values equal to the sum of the individual capacitance values less than the value of the smallest capacitor equal to the source voltage divided by total current None of these equal to the sun of the individual capacitive-reactance values equal to the sum of the individual capacitance values less than the value of the smallest capacitor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values? None of these 0.93 V 9.3 W 0.93 W 0.041666666666667 None of these 0.93 V 9.3 W 0.93 W 0.041666666666667 ANSWER DOWNLOAD EXAMIANS APP
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