31 4-26. A full-wave rectifier has an output frequency of 120 hertz, a filter capacitor value of 25 microfarads, and a load resistance of 10 kilohms.What is the value of X_{C}? 1. 5.3 ohms 2. 53 ohms 3. 106 ohms 4. 1060 ohms 4-27. What type of filter is the most basic power supply filter? 1. Capacitor 2. LC choke-input 3. LC capacitor-input 4. RC capacitor-input 4-28. In a circuit with a capacitor filter, how is the capacitor connected? 1. In series with the load 2. In parallel with the load 3. In series with the input 4. Both 2 and 3 above 4-29. The LC choke-input filter is used primarily where which of the following types of regulation is/are important? 1. Frequency2. Current only 3. Voltage only 4. Voltage and Current 4-30. In an LC choke-input filter circuit, the capacitor charges only to the average value of the input voltage. What component inhibits the capacitor from reaching the peak value of the input voltage? 1. The diode2. The capacitor 3. The filter choke 4. The load resistor 4-31. In an LC choke-input filter, the larger the value of the filter capacitor, the better the filtering action. Which of the following factors represents the major limitation in obtaining the maximum value of the capacitor used? 1. Cost 2. Reliability3. Availability 4. Physical size 4-32. What is the most common range of values, in henries, for a power supplychoke? 1. 1 to 20 2. 5 to 25 3. 25 to 30 4. 10 to 200 4-33. If the impedance of the choke in an LC choke-input filter is increased, the ripple will 1. increase 2. decrease 3. oscillate 4. remain the same 4-34. A full-wave rectifier has an output frequency of 120 hertz, a filter choke with a value of 10 henries, and a load resistance of 10 kilohms. What is the value of X_{L}? 1. 75 ohms 2. 7.5 ohms 3. 75 kilohms 4. 7.5 kilohms 4-35. The filter capacitor in the LC choke-input filter is NOT subject to extreme voltage surges because of the protection provided by what component? 1. Shunt capacitor 2. Series resistor 3. Load resistor 4. Inductor

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