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NCATT AET STUDY GUID
Basic Circuit TroubleShooting
| Question | Answer |
|---|---|
| The most versatile electrical measuring instrument used by aircraft technicians | Multimeter |
| A multimeter measures | Voltage, Current and Resistance |
| Each multimeter is equipped with | Voltmeter, ammeter, and ohmmeter |
| What is used to find a circuit problem with power on a circuit | Voltmeter |
| Where do you check when your checking for zero output | Input |
| What is used to find a circuit problem with the power on a circuit | Ammeter |
| Millimeter and micro ammeters are used to measure | Very Small Rates |
| What is used to find a circuit problem when power is removed from the circuit | Ohmmeter |
| What do ohmmeters measure | Resistance |
| What measures and displays voltage in waveforms of a wave generating circuit | Oscilloscope |
| What checks for the existence of a complete electrical system between two points | Continuity Check |
| What two meters are used to test continuity | Voltmeter or Ohmmeter |
| Where should continuity test be performed | Terminal |
| How many steps are there for troubleshooting | Nine |
| What are the steps of troubleshooting | Is equipment being used properly Is it ongoing Is it intermittent Does it occur during Taxi, Takeoff, Cruising or Landing Is software loaded properly Does weather have an impact |
| When checking for the obvious | Any loose connections Any Broken, loose, bent or frayed wiring Inop lights Bad electrical bonds Broken or cracked parts Any punctures Component over heat Components need adjustments |
| To solve the malfunction locate the possible cause by using | Troubleshooting Charts |
| To find information on components or system malfunction use | Manufacturer Information |
| To locate the fault through checks using | Multimeters, oscilloscope or other appropriate equipment |
| What are the most common problems encountered while troubleshooting circuits | Open resistors, Open contacts or shorts between conductors |