5-20. The number of what factor determines how many sets of compensating loops that are used to compensate for dc magnetic noise on an aircraft? 1. Aircraft axes requiring compensation 2. Aircraft magnetic fields requiring compensation 3. Aircraft dc load distribution centers 4. Aircraft detector magnetometers used 5-21. Of the following manufacturing practices, which one minimizes the size of the electromagnetic compensating loops used in newer aircraft? 1. Installing ground return wires in the aircraft 2. Removing the ground return wires in tie aircraft 3. Increasing the size of the variable resistor connected across the loops 4. Decreasing the size of the variable resistor connected across the loops 5-22. What are the flight characteristics of an aircraft during adjustment of the MAD dc compensation system? 1. Straight and any heading 2. Level and any heading 3. Straight and level, and two cardinal headings 4. Straight and level, and four cardinal headings 5-23. MAD equipment compensation is usually performed under which of the following conditions? 1. On a test bench at AIMD 2. With a test set at compass rose 3. In flight at sea 4. In flight over land 5-24. What is the purpose of MAD compensation? 1. To eliminate all magnetic fields near the magnetometer 2. To eliminate the effect of the earth’s natural magnetic field on the magnetometer 3. To balance the magnetic field of the magnetometer 4. To balance the magnetic fields near the magnetometer 5-25. Due to the arrangement of the helium absorption cells and the IR detectors, the final output of what component of the AN/ASQ-81 MAD set is NOT affected by aircraft maneuvers? 1. AM-4535 2. DT-323 3. DT-355 4. C-6983 5-26. What component detects the anomaly signal from the AN/ASQ-81 MAD set magnetic detector output signal? 1. AM-4535 2. DT-323 3. DT-355 4. C-6983 5-27. On the AN/ASQ-81 MAD set amplifier-power supply, what switch is used to check the quick replaceable assemblies in the amplifier-power supply? 1. RES OSC ADJ switch 2. CONF SELECT switch 3. BUILT IN TEST switch 4. MODE SELECT switch 5-28. On the maintenance panel of the AN/ASQ-81 MAD set amplifier-power supply, what switch is used to select various system configurations necessary for proper maintenance and troubleshooting? 1. RES OSC ADJ switch 2. CONF SELECT switch 3. BUILT IN TEST switch 4. MODE SELECT switch 33