ASA 101 Exam Questions With Correct
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Rationales 2026 Q&A | Instant
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1. What is the primary purpose of an altimeter in an aircraft?
A. Measure airspeed
B. Measure altitude above sea level
C. Measure engine RPM
D. Measure outside air temperature
Answer: B
Rationale: An altimeter measures the aircraft’s altitude above
mean sea level by sensing atmospheric pressure and converting it
into a height reading.
2. What does a magnetic compass indicate?
A. True north
B. Grid north
C. Magnetic north
D. Geographic south
Answer: C
Rationale: A magnetic compass aligns with the Earth's magnetic
field and points toward magnetic north, not true north.
,3. What is lift primarily generated by?
A. Gravity
B. Engine thrust
C. Wings moving through air
D. Landing gear
Answer: C
Rationale: Lift is generated when air flows over and under the
wings, creating a pressure difference due to wing shape and
airflow.
4. Which force opposes thrust in flight?
A. Lift
B. Drag
C. Weight
D. Gravity
Answer: B
Rationale: Drag is the aerodynamic force that resists the aircraft’s
forward motion through the air.
5. What does “airspeed” measure?
A. Speed over ground
B. Speed relative to surrounding air
C. Engine power output
D. Wind direction
Answer: B
Rationale: Airspeed is the speed of the aircraft relative to the air
mass in which it is flying.
,6. What is the standard sea level pressure setting used in aviation?
A. 29.92 inHg
B. 30.50 inHg
C. 28.00 inHg
D. 31.00 inHg
Answer: A
Rationale: 29.92 inches of mercury is the standard pressure setting
used to calibrate altimeters at sea level.
7. What is the function of the rudder?
A. Control pitch
B. Control yaw
C. Control roll
D. Increase lift
Answer: B
Rationale: The rudder controls yaw, which is the left or right
movement of the aircraft’s nose.
8. What instrument measures vertical speed?
A. Altimeter
B. Airspeed indicator
C. Vertical speed indicator
D. Heading indicator
Answer: C
Rationale: The vertical speed indicator shows the rate of climb or
descent in feet per minute.
, 9. What causes induced drag?
A. High speed flight
B. Lift production
C. Engine thrust
D. Low altitude
Answer: B
Rationale: Induced drag is created as a byproduct of lift
generation, especially at lower speeds and higher angles of attack.
10. What is the main purpose of flaps?
A. Increase cruise speed
B. Reduce weight
C. Increase lift at low speeds
D. Improve fuel efficiency
Answer: C
Rationale: Flaps increase wing camber, allowing more lift at lower
speeds, useful during takeoff and landing.
11. What is the standard direction of runway numbering?
A. Based on magnetic heading
B. Based on true north
C. Based on wind direction
D. Random assignment
Answer: A
Rationale: Runway numbers are based on the magnetic azimuth of
the runway’s heading rounded to the nearest 10 degrees.
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf.
1. What is the primary purpose of an altimeter in an aircraft?
A. Measure airspeed
B. Measure altitude above sea level
C. Measure engine RPM
D. Measure outside air temperature
Answer: B
Rationale: An altimeter measures the aircraft’s altitude above
mean sea level by sensing atmospheric pressure and converting it
into a height reading.
2. What does a magnetic compass indicate?
A. True north
B. Grid north
C. Magnetic north
D. Geographic south
Answer: C
Rationale: A magnetic compass aligns with the Earth's magnetic
field and points toward magnetic north, not true north.
,3. What is lift primarily generated by?
A. Gravity
B. Engine thrust
C. Wings moving through air
D. Landing gear
Answer: C
Rationale: Lift is generated when air flows over and under the
wings, creating a pressure difference due to wing shape and
airflow.
4. Which force opposes thrust in flight?
A. Lift
B. Drag
C. Weight
D. Gravity
Answer: B
Rationale: Drag is the aerodynamic force that resists the aircraft’s
forward motion through the air.
5. What does “airspeed” measure?
A. Speed over ground
B. Speed relative to surrounding air
C. Engine power output
D. Wind direction
Answer: B
Rationale: Airspeed is the speed of the aircraft relative to the air
mass in which it is flying.
,6. What is the standard sea level pressure setting used in aviation?
A. 29.92 inHg
B. 30.50 inHg
C. 28.00 inHg
D. 31.00 inHg
Answer: A
Rationale: 29.92 inches of mercury is the standard pressure setting
used to calibrate altimeters at sea level.
7. What is the function of the rudder?
A. Control pitch
B. Control yaw
C. Control roll
D. Increase lift
Answer: B
Rationale: The rudder controls yaw, which is the left or right
movement of the aircraft’s nose.
8. What instrument measures vertical speed?
A. Altimeter
B. Airspeed indicator
C. Vertical speed indicator
D. Heading indicator
Answer: C
Rationale: The vertical speed indicator shows the rate of climb or
descent in feet per minute.
, 9. What causes induced drag?
A. High speed flight
B. Lift production
C. Engine thrust
D. Low altitude
Answer: B
Rationale: Induced drag is created as a byproduct of lift
generation, especially at lower speeds and higher angles of attack.
10. What is the main purpose of flaps?
A. Increase cruise speed
B. Reduce weight
C. Increase lift at low speeds
D. Improve fuel efficiency
Answer: C
Rationale: Flaps increase wing camber, allowing more lift at lower
speeds, useful during takeoff and landing.
11. What is the standard direction of runway numbering?
A. Based on magnetic heading
B. Based on true north
C. Based on wind direction
D. Random assignment
Answer: A
Rationale: Runway numbers are based on the magnetic azimuth of
the runway’s heading rounded to the nearest 10 degrees.
