8. When a 60 Hz sinusoidal voltage is applied to the input of a half-wave rectifier, the output frequency is; (a) 120Hz (b) 30Hz (c) 60Hz (d) OHz 9. When a 60Hz sinusoidal voltage is applied to the input of a full-wave rectifier, the output frequency is (a) 120Hz (b) 60Hz (c) 240Hz (d) OHZ 10. The total secondary voltage in a center-tapped full-wave rectifier is 125V rms. Neglecting the diode drop, the rms output voltage is (a) 125V (b) 177V (c) 100V (d) 62.5V 11. A certain power-supply filter produces an output with a ripple of 100mV peak-to-peak and a de value of 20V. The ripple factor is (a) 0.05 (b) 0.005 (c) 0.00005 (d) 0.02 12. A 60V peak full-wave rectified voltage is applied to a capacitor-input filter. If f= 120Hz, RL = 10k2, and C= 10 uF, the ripple voltage is (a) 0.6V (b) 6 mV (c) 5.0V (d) 2.88V 13. If the load resistance of a capacitor-filtered full- is the ripple voltage (a) increases (b) decreases (c) is not affected (d) has a different frequency 14. Line regulation is determined by (a) load current (b) zener current and load current (e) changes in load resistance and output voltage (d) changes in output voltage and input voltage 15. In a certain positive clamper circuit, a 120V rms sine wave is applied to the input. The DC value of the output is (a) 119.3V (b) 169V (c) 60V (d) 75.6V 16. The input of a voltage doubler is 120V rms. The peak-to-peak output is approximately (a) 240V (b) 60V (c) 167V (d) 339V 17. If the input voltage to a voltage tripler has an rms value of 12V, the de output voltage is approximately (a) 36V (b) 50.9V (c) 33.9V (d) 32.4V 18. When a silicon diode is open, a DMM will generally indicate (a) OV (b) OL (c) approximately 0.7V (d) approximately 0.3V 19. In a rectifier circuit, if the secondary winding in the transformer opens, the output is (a) OV (b) 120V (c) less than it should be (d) unaffected