Electronic Principles What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz? less than 1 Ohm 1590 Ohm 312 Ohm 690 Ohm None of these less than 1 Ohm 1590 Ohm 312 Ohm 690 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle None of these the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle None of these 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? 20 mW 300 mW None of these 10 mW 200 mW 20 mW 300 mW None of these 10 mW 200 mW ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltage in a parallel RC circuit? None of these The total voltage leads the total current by less than 90 degree The total voltage is less than the sum of the voltages across the resistance and capacitance The total voltage is equal to the sum of the voltages across the resistance and capacitance The voltage always has the same amplitude and phase for every part of the circuit None of these The total voltage leads the total current by less than 90 degree The total voltage is less than the sum of the voltages across the resistance and capacitance The total voltage is equal to the sum of the voltages across the resistance and capacitance The voltage always has the same amplitude and phase for every part of the circuit ANSWER DOWNLOAD EXAMIANS APP
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? None of these 0.2 A 0.3 A 0.6 A 0.4 A None of these 0.2 A 0.3 A 0.6 A 0.4 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 4 0.5 180 0.25 None of these 4 0.5 180 0.25 None of these ANSWER DOWNLOAD EXAMIANS APP
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