Aircraft Instrumentation MCQs

1. Which instrument provides information about the aircraft’s rate of climb or descent? A) Altimeter B) Airspeed indicator C) Vertical speed indicator D) Turn coordinator Correct Answer: C) Vertical speed indicator 2. The Mach meter measures the aircraft’s speed relative to which speed of sound? A) Local speed of sound B) True airspeed C) Ground speed D) Indicated airspeed Correct Answer: A) Local speed of sound 3. Which instrument displays the aircraft’s current altitude above mean sea level (MSL)? A) Vertical speed indicator B) Turn coordinator C) Altimeter D) Heading indicator Correct Answer: C) Altimeter 4. The heading indicator uses which reference to display the aircraft’s heading? A) Magnetic compass B) True north C) Gyroscopic stability D) GPS coordinates Correct Answer: A) Magnetic compass 5. Which instrument provides information about the aircraft’s airspeed relative to the surrounding air? A) True airspeed indicator B) Ground speed indicator C) Vertical speed indicator D) Airspeed indicator Correct Answer: D) Airspeed indicator 6. Which instrument provides a visual representation of the aircraft’s bank angle and rate of turn? A) Turn coordinator B) Attitude indicator C) Heading indicator D) Vertical speed indicator Correct Answer: A) Turn coordinator 7. Which instrument is crucial for maintaining the aircraft’s attitude relative to the horizon? A) Vertical speed indicator B) Heading indicator C) Attitude indicator D) Turn coordinator Correct Answer: C) Attitude indicator 8. Which system measures and displays the aircraft’s position relative to the localizer and glide slope signals on approach? A) ILS (Instrument Landing System) B) VOR (VHF Omnidirectional Range) C) ADF (Automatic Direction Finder) D) DME (Distance Measuring Equipment) Correct Answer: A) ILS (Instrument Landing System) 9. Which instrument provides information about the aircraft’s angle of attack? A) Attitude indicator B) Vertical speed indicator C) Airspeed indicator D) Angle of attack indicator Correct Answer: D) Angle of attack indicator 10. The turn coordinator combines which two primary indications? A) Bank angle and rate of turn B) Attitude and heading C) True airspeed and ground speed D) Altitude and vertical speed Correct Answer: A) Bank angle and rate of turn 11. Which instrument measures the temperature of the air entering the aircraft’s engine? A) Thermocouple B) EGT gauge (Exhaust Gas Temperature) C) CHT gauge (Cylinder Head Temperature) D) OAT gauge (Outside Air Temperature) Correct Answer: D) OAT gauge (Outside Air Temperature) 12. Which instrument provides information about the aircraft’s fuel quantity? A) Fuel flow meter B) Fuel pressure gauge C) Fuel quantity gauge D) Fuel temperature gauge Correct Answer: C) Fuel quantity gauge 13. Which instrument is used to monitor the electrical power system of the aircraft? A) Ammeter B) Voltmeter C) Load meter D) Wattmeter Correct Answer: B) Voltmeter 14. Which instrument indicates the RPM (revolutions per minute) of the aircraft’s engine? A) Tachometer B) Engine pressure ratio gauge C) Manifold pressure gauge D) Torque meter Correct Answer: A) Tachometer 15. Which instrument provides information about the aircraft’s bank angle? A) Attitude indicator B) Turn coordinator C) Heading indicator D) Vertical speed indicator Correct Answer: B) Turn coordinator 16. What does a Horizontal Situation Indicator (HSI) display primarily? A) Ground speed B) True heading C) Navigation information D) Rate of climb or descent Correct Answer: C) Navigation information 17. Which instrument helps pilots maintain a coordinated turn by indicating the rate of turn and balance of the aircraft? A) Altimeter B) Airspeed indicator C) Turn coordinator D) Attitude indicator Correct Answer: C) Turn coordinator 18. What does a radar altimeter measure in an aircraft? A) Indicated altitude B) True altitude C) Pressure altitude D) Height above ground level Correct Answer: D) Height above ground level 19. Which instrument provides information about the aircraft’s position relative to the horizon? A) Attitude indicator B) Vertical speed indicator C) Heading indicator D) Altimeter Correct Answer: A) Attitude indicator 20. Which instrument is essential for navigation and provides magnetic heading information? A) Attitude indicator B) Turn coordinator C) Heading indicator D) Vertical speed indicator Correct Answer: C) Heading indicator 21. In aircraft instrumentation, what does the Mach number indicate? A) Rate of climb or descent B) True airspeed C) Air density D) Speed relative to the speed of sound Correct Answer: D) Speed relative to the speed of sound 22. Which instrument is used to monitor engine parameters such as RPM and temperatures in aircraft? A) Fuel flow meter B) Engine pressure ratio gauge C) Engine indicating and crew alerting system (EICAS) D) Manifold pressure gauge Correct Answer: C) Engine indicating and crew alerting system (EICAS) 23. Which instrument provides information about the aircraft’s vertical speed in feet per minute? A) Altimeter B) Airspeed indicator C) Vertical speed indicator D) Turn coordinator Correct Answer: C) Vertical speed indicator 24. What does a fuel quantity gauge indicate in an aircraft? A) Fuel flow rate B) Fuel temperature C) Amount of fuel remaining D) Fuel pressure Correct Answer: C) Amount of fuel remaining 25. Which instrument provides information about the aircraft’s electrical system status? A) Voltmeter B) Ammeter C) Load meter D) Battery temperature gauge Correct Answer: A) Voltmeter 26. What does a Tachometer measure in an aircraft? A) Engine speed (RPM) B) Aircraft speed (IAS) C) Altitude D) Engine oil pressure Correct Answer: A) Engine speed (RPM) 27. Which instrument is crucial for monitoring and controlling cabin pressure in pressurized aircraft? A) Cabin altimeter B) Cabin differential pressure gauge C) Cabin temperature gauge D) Cabin humidity indicator Correct Answer: B) Cabin differential pressure gauge 28. In aircraft instrumentation, what does the air data computer (ADC) primarily process? A) Engine performance data B) Navigation data C) Airspeed and altitude data D) Fuel system data Correct Answer: C) Airspeed and altitude data 29. Which instrument provides information about the aircraft’s slat and flap positions? A) Flap indicator B) Slat indicator C) Wing position indicator D) Leading edge device indicator Correct Answer: A) Flap indicator 30. What does an Angle of Attack (AoA) vane measure in an aircraft? A) Pitch angle B) Thrust angle C) Angle between the chord line of the wing and the relative airflow D) Angle between the longitudinal axis of the aircraft and the horizon Correct Answer: C) Angle between the chord line of the wing and the relative airflow 31. Which instrument provides information about the aircraft’s rate of descent during landing? A) Vertical speed indicator B) Glide slope indicator C) Ground proximity warning system (GPWS) D) Radar altimeter Correct Answer: B) Glide slope indicator 32. What does a stall warning indicator primarily monitor in an aircraft? A) Engine stall risk B) Aerodynamic stall risk C) Hydraulic system pressure D) Cabin pressure differential Correct Answer: B) Aerodynamic stall risk 33. Which instrument is used to monitor and control the aircraft’s fuel flow and consumption? A) Fuel quantity gauge B) Fuel flow meter C) Fuel pressure gauge D) Fuel temperature gauge Correct Answer: B) Fuel flow meter 34. What does a magnetic compass primarily indicate in an aircraft? A) True heading B) Magnetic heading C) Compass heading D) Gyroscopic heading Correct Answer: B) Magnetic heading 35. Which instrument provides information about the aircraft’s air pressure and altitude? A) Altimeter B) Airspeed indicator C) Vertical speed indicator D) Turn coordinator Correct Answer: A) Altimeter 36. What does a G-meter measure in an aircraft? A) Engine g-force B) Structural g-force C) Rate of climb or descent D) Bank angle Correct Answer: B) Structural g-force 37. Which instrument is used to monitor the oil temperature and pressure in aircraft engines? A) Oil pressure gauge B) Oil temperature gauge C) Oil flow meter D) Oil quantity gauge Correct Answer: B) Oil temperature gauge 38. What does a manifold pressure gauge measure in an aircraft? A) Engine power output B) Engine RPM C) Engine oil pressure D) Engine exhaust temperature Correct Answer: A) Engine power output 39. Which instrument provides information about the aircraft’s fuel pressure and flow rate? A) Fuel flow meter B) Fuel pressure gauge C) Fuel quantity gauge D) Fuel temperature gauge Correct Answer: B) Fuel pressure gauge 40. What does a temperature gauge measure in an aircraft? A) Cabin temperature B) Engine temperature C) Fuel temperature D) Outside air temperature Correct Answer: B) Engine temperature 41. Which instrument provides information about the aircraft’s hydraulic system pressure? A) Hydraulic pressure gauge B) Hydraulic flow meter C) Hydraulic temperature gauge D) Hydraulic quantity gauge Correct Answer: A) Hydraulic pressure gauge 42. What does a chronometer measure in an aircraft? A) Elapsed time B) Altitude C) True airspeed D) Rate of climb or descent Correct Answer: A) Elapsed time 43. Which instrument is essential for monitoring and controlling the aircraft’s electrical system load? A) Ammeter B) Voltmeter C) Loadmeter D) Battery temperature gauge Correct Answer: C) Loadmeter 44. What does a radio altimeter primarily measure in an aircraft? A) Indicated altitude B) True altitude C) Height above ground level D) Pressure altitude Correct Answer: C) Height above ground level 45. Which instrument provides information about the aircraft’s airspeed relative to the speed of sound? A) Airspeed indicator B) Machmeter C) True airspeed indicator D) Ground speed indicator Correct Answer: B) Machmeter 46. What does a digital engine indicating and crew alerting system (EICAS) primarily display? A) Engine RPM B) Fuel flow rate C) Engine parameters and alerts D) Hydraulic pressure Correct Answer: C) Engine parameters and alerts 47. Which instrument provides information about the aircraft’s oxygen supply status? A) Oxygen flow meter B) Oxygen pressure gauge C) Oxygen quantity gauge D) Oxygen temperature gauge Correct Answer: C) Oxygen quantity gauge 48. Which instrument provides information about the aircraft’s hydraulic fluid level and temperature? A) Hydraulic pressure gauge B) Hydraulic flow meter C) Hydraulic temperature gauge D) Hydraulic quantity gauge Correct Answer: D) Hydraulic quantity gauge 49. What does a yaw damper primarily assist in controlling in an aircraft? A) Bank angle B) Pitch angle C) Yaw stability D) Engine power output Correct Answer: C) Yaw stability 50. Which instrument is used to monitor and control the aircraft’s de-icing and anti-icing systems? A) De-ice pressure gauge B) De-ice temperature gauge C) De-ice flow meter D) De-ice timer Correct Answer: A) De-ice pressure gauge 51. What does a standby attitude indicator provide in case of primary instrument failure? A) Heading information B) Altitude information C) Pitch and bank information D) Airspeed information Correct Answer: C) Pitch and bank information 52. Which instrument provides information about the aircraft’s distance from a selected navigational aid? A) Distance Measuring Equipment (DME) B) Global Positioning System (GPS) C) Automatic Direction Finder (ADF) D) Very High Frequency Omnidirectional Range (VOR) Correct Answer: A) Distance Measuring Equipment (DME) 53. What does a weather radar primarily indicate in an aircraft? A) Atmospheric pressure B) Wind speed and direction C) Thunderstorm activity and precipitation D) Temperature and humidity Correct Answer: C) Thunderstorm activity and precipitation

Aircraft Instrumentation MCQs

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