10-35. A receiver tuned to 2.4 kHz experiences extreme full-wave rectification interference. Which of the following aircraft components is the probable source? 1. Starter motor 2. Wing-flap motor 3. Single-phase invertor 4. Three-phase generator IN ANSWERING QUESTION 10-36, REFER TO FIGURE 10-1 IN THE TEXTBOOK. 10-36. Interference is very low at the power source for which of the following reasons? 1. Source operation high frequency 2. Source operation low frequency 3. Battery high impedance 4. Battery low impedance 10-37. Which of the following actions will reduce inductive magnetic coupling in aircraft wiring? 1. Increasing the spacing between the wires 2. Decreasing the spacing between the wires 3. Decreasing the angle between the wires 4. Replacing all the existing wire with shielded wire 10-38. Which of the following antenna leads is a source of radio receiver noise in the HF range? 1. Shielded receiver 2. Unshielded receiver 3. Shielded transmitter 4. Unshielded transmitter 10-39. What elements are normally used to achieve interference reduction at the source? 10-40. The efficiency of a perfect capacitor in bypassing radio interference increases in what proportion to the capacitance of the capacitor? 1. Linearly 2. Exponentially 3. Directly 4. Indirectly 10-41. The value of a capacitor as a bypass is lost at which of the following frequencies? 1. At the resonant frequency 2. At frequencies much lower than the resonant frequency only 3. At frequencies much higher than the resonant frequency only 4. At frequencies much higher and lower that the resonant frequency 10-42. The ideal position to place a capacitive filter to reduce radio interference is in what location? 1. Between the source of the interference and the receiver 2. Close to the source of interference 3. The receiver circuit 4. The source circuit 10-43. Feedthrough capacitors used to filter interference in an ac circuit should have a voltage rating of at least what magnitude across the capacitor? 1. Twice the applied voltage 2. Twice the peak voltage 3. Four times the applied voltage 4. Four times the peak voltage 1. High-frequency diodes 2. High-value components 3. Discrete components 4. Transistors 68