ASA 102B Practice Exam Questions With
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. What is the primary function of an aircraft pitot-static system?
A. Measure engine temperature
B. Provide airspeed, altitude, and vertical speed information
C. Control fuel flow to the engine
D. Regulate cabin pressure
Correct Answer: B. Provide airspeed, altitude, and vertical speed
information
Rationale: The pitot-static system measures dynamic and static air
pressure to compute indicated airspeed, altitude, and vertical speed,
which are essential for safe flight operations.
2. Which instrument uses pitot pressure?
A. Altimeter
B. Vertical speed indicator
C. Airspeed indicator
D. Attitude indicator
,Correct Answer: C. Airspeed indicator
Rationale: The airspeed indicator uses both pitot (dynamic) and static
pressure to calculate the aircraft’s speed relative to the air.
3. What does the altimeter measure?
A. Engine RPM
B. Cabin pressure
C. Static air pressure to determine altitude
D. Air temperature
Correct Answer: C. Static air pressure to determine altitude
Rationale: The altimeter measures atmospheric static pressure and
converts it into altitude above mean sea level.
4. What is the purpose of a static port?
A. Measures engine thrust
B. Measures ambient air pressure
C. Measures fuel pressure
D. Measures temperature
Correct Answer: B. Measures ambient air pressure
Rationale: The static port senses undisturbed outside air pressure,
which is critical for accurate instrument readings.
5. What happens if the pitot tube becomes blocked while the drain
hole is open?
,A. Airspeed reads zero
B. Airspeed increases incorrectly
C. Airspeed reads correctly
D. Altimeter fails
Correct Answer: A. Airspeed reads zero
Rationale: With the pitot tube blocked and drain open, pressure is lost,
causing the airspeed indicator to drop to zero.
6. What is a major advantage of turbine engines over piston engines?
A. Lower cost
B. Higher fuel efficiency at all altitudes
C. Greater power-to-weight ratio
D. Simpler design
Correct Answer: C. Greater power-to-weight ratio
Rationale: Turbine engines produce significantly more power relative
to their weight compared to piston engines.
7. What does a magneto do in a piston engine?
A. Supplies fuel
B. Generates electricity for cabin systems
C. Produces ignition spark
D. Controls throttle
Correct Answer: C. Produces ignition spark
Rationale: The magneto generates high-voltage electricity to ignite
the fuel-air mixture in the engine cylinders.
, 8. What is carburetor icing caused by?
A. High fuel pressure
B. Moisture freezing due to temperature drop
C. Excess engine oil
D. High altitude only
Correct Answer: B. Moisture freezing due to temperature drop
Rationale: Rapid cooling in the carburetor causes moisture in the air to
freeze, restricting airflow and engine performance.
9. What is the purpose of a mixture control?
A. Controls engine RPM
B. Regulates fuel-to-air ratio
C. Controls cabin temperature
D. Controls oil pressure
Correct Answer: B. Regulates fuel-to-air ratio
Rationale: The mixture control adjusts the ratio of fuel to air for
optimal engine performance at different altitudes.
10. Leaning the mixture at high altitude is necessary because:
A. Air is denser
B. Fuel pressure increases
C. Air is less dense
D. Engine becomes larger
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary function of an aircraft pitot-static system?
A. Measure engine temperature
B. Provide airspeed, altitude, and vertical speed information
C. Control fuel flow to the engine
D. Regulate cabin pressure
Correct Answer: B. Provide airspeed, altitude, and vertical speed
information
Rationale: The pitot-static system measures dynamic and static air
pressure to compute indicated airspeed, altitude, and vertical speed,
which are essential for safe flight operations.
2. Which instrument uses pitot pressure?
A. Altimeter
B. Vertical speed indicator
C. Airspeed indicator
D. Attitude indicator
,Correct Answer: C. Airspeed indicator
Rationale: The airspeed indicator uses both pitot (dynamic) and static
pressure to calculate the aircraft’s speed relative to the air.
3. What does the altimeter measure?
A. Engine RPM
B. Cabin pressure
C. Static air pressure to determine altitude
D. Air temperature
Correct Answer: C. Static air pressure to determine altitude
Rationale: The altimeter measures atmospheric static pressure and
converts it into altitude above mean sea level.
4. What is the purpose of a static port?
A. Measures engine thrust
B. Measures ambient air pressure
C. Measures fuel pressure
D. Measures temperature
Correct Answer: B. Measures ambient air pressure
Rationale: The static port senses undisturbed outside air pressure,
which is critical for accurate instrument readings.
5. What happens if the pitot tube becomes blocked while the drain
hole is open?
,A. Airspeed reads zero
B. Airspeed increases incorrectly
C. Airspeed reads correctly
D. Altimeter fails
Correct Answer: A. Airspeed reads zero
Rationale: With the pitot tube blocked and drain open, pressure is lost,
causing the airspeed indicator to drop to zero.
6. What is a major advantage of turbine engines over piston engines?
A. Lower cost
B. Higher fuel efficiency at all altitudes
C. Greater power-to-weight ratio
D. Simpler design
Correct Answer: C. Greater power-to-weight ratio
Rationale: Turbine engines produce significantly more power relative
to their weight compared to piston engines.
7. What does a magneto do in a piston engine?
A. Supplies fuel
B. Generates electricity for cabin systems
C. Produces ignition spark
D. Controls throttle
Correct Answer: C. Produces ignition spark
Rationale: The magneto generates high-voltage electricity to ignite
the fuel-air mixture in the engine cylinders.
, 8. What is carburetor icing caused by?
A. High fuel pressure
B. Moisture freezing due to temperature drop
C. Excess engine oil
D. High altitude only
Correct Answer: B. Moisture freezing due to temperature drop
Rationale: Rapid cooling in the carburetor causes moisture in the air to
freeze, restricting airflow and engine performance.
9. What is the purpose of a mixture control?
A. Controls engine RPM
B. Regulates fuel-to-air ratio
C. Controls cabin temperature
D. Controls oil pressure
Correct Answer: B. Regulates fuel-to-air ratio
Rationale: The mixture control adjusts the ratio of fuel to air for
optimal engine performance at different altitudes.
10. Leaning the mixture at high altitude is necessary because:
A. Air is denser
B. Fuel pressure increases
C. Air is less dense
D. Engine becomes larger
