Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.6 A 0.4 A 0.3 A None of these 0.2 A 0.6 A 0.4 A 0.3 A None of these 0.2 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At cut off, the Q point is at middle of the load line upper end of the load line None of these infinity lower end of the load line middle of the load line upper end of the load line None of these infinity lower end of the load line ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best applies to a parallel RLC circuit? All of these The sum of the current is always less than the applied current The voltage waveform for each component always has the same amplitude and phase as the applied voltage None of these The current waveform for each component always has the same amplitude and phase as the applied current All of these The sum of the current is always less than the applied current The voltage waveform for each component always has the same amplitude and phase as the applied voltage None of these The current waveform for each component always has the same amplitude and phase as the applied current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitive reactance of a parallel capacitor circuit is: equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values equal to the source voltage divided by total current None of these equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values equal to the source voltage divided by total current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? None of these Emit light Regulate voltage Rectify line voltage Amplify weak signals None of these Emit light Regulate voltage Rectify line voltage Amplify weak signals ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 400 Ohm 410 Ohm None of these 310 Ohm 550 Ohm 400 Ohm 410 Ohm None of these 310 Ohm 550 Ohm ANSWER DOWNLOAD EXAMIANS APP
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