#### Electronic Principles - Section 1 Multiple Questions and Answers.

 21. The knee voltage of a diode is approximately equal to the A. Applied voltage B. Barrier potential C. Breakdown voltage D. Forward voltage

 22. 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? A. 310 Ohm B. 400 Ohm C. 410 Ohm D. 550 Ohm

 23. The rms value of a sine waveform is: A. the number of cycles completed in one second B. the time required to complete one full cycle C. equal to 0.707 times the peak amplitude D. equal to 1.41 times the peak amplitude

 24. A high-pass filter: A. passes lower-frequency signals and reduces higher-frequency signals B. passes higher-frequency signals and reduces lower-frequency signals C. has no effect on ac signals D. increases the level of all frequencies by a significant amount

 25. Which one of the following statements is true for the voltages in a series RC circuit? A. The total voltage is equal to the sum of the voltages across the resistance and capacitance B. The voltage always has the same amplitude and phase for every part of the circuit C. The total voltage is less than the sum of the voltages across the resistance and capacitance D. The total voltage is greater than the sum of the voltages across the resistance and capacitance

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