22 Figure 3D. LC capacitor-input filter. IN ANSWERING QUESTIONS 3-43 AND 3-44, REFER TO FIGURE 3D.   3-43. Components L1 and C2 form what type of circuit?   1.    Ac voltage doubler   2.    Dc voltage doubler   3.    Ac voltage divider   4.    Dc voltage divider 3-44. If component L1 shorts to the core, which of the following conditions will result?   1.    No output   2.    Excessively high output   3.    Excessive ripple frequency   4.    Low output ripple frequency 3-45. In a voltage regulator, what percent of regulation would be ideal?   1.    1 percent   2.    0 percent   3.    3 percent   4.    5 percent THIS SPACE LEFT BLANK INTENTIONALLY. IN ANSWERING QUESTIONS 3-46 THROUGH 3-48, REFER TO THE FOLLOWING FORMULA: 3-46. If a power supply produces 30 volts with no load and 25 volts under full load, what is the percent of regulation?   1.      5 percent   2.    10 percent   3.    20 percent   4.    30 percent 3-47. If a power supply produces 10 volts with no load and 9 volts under full load, what is the percent of regulation?   1.      8 percent   2.      9 percent   3.    10 percent   4.    11 percent 3-48. If a power supply produces 20 volts with no load and 20 volts under full load, what is the percent of regulation?   1.    1 percent   2.    2 percent   3.    3 percent   4.    0 percent 3-49. The simple series voltage regulator was designed to function as what type of resistance?   1.   Fixed resistance in series with the load   2.   Fixed resistance in parallel with the load   3.   Variable resistance in series with the load   4.   Variable resistance in parallel with the load