Physics · Mathematics

Aviation and Flight Principles

300 Questions

Aviation and flight principles cover the physics of aircraft, including speed, altitude, lift, and takeoff requirements. These concepts frequently appear in physics and general science sections of various competitive exams. Use this collection to practice solving numerical and conceptual problems related to flight dynamics and aviation rules.

Aircraft takeoff speedFlight instrument rulesAverage speed calculationGlider and balloon altitudeEarth magnetic field effects

Aviation and Flight Principles Questions

Multiple choice

Above the critical angle of attack, an airplane will

  1. crash

  2. spin

  3. stall

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When an airplane exceeds its critical angle of attack, the smooth airflow over the wing separates, causing a sudden loss of lift. This is called a stall, regardless of the airplane's airspeed or attitude. Stalls occur because the wing can no longer generate sufficient lift at that extreme angle, not because of engine failure or spinning.

Multiple choice

Flying in a jet stream

  1. does not change the duration of the flight

  2. decreases the duration of the flight

  3. increases the duration of the flight

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Flying in a jet stream decreases the duration of the flight when flying with the jet stream (tailwind component). Jet streams are narrow, fast-moving air currents in the atmosphere that can significantly increase ground speed when flying in the same direction, reducing total flight time. Flying against a jet stream would increase flight duration.

Multiple choice

35012G25KT in a TAF means

  1. winds from 350 at 12 knots gust to 25 knots

  2. winds from 035 at 25 knots gust to 12 knots

  3. winds from 025 gust to 12 knots

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

TAF wind format is dddffGfmKT: 3-digit direction (350), 2-digit speed (12), G for gust, 2-digit gust speed (25), and KT for knots. This means winds from 350 degrees at 12 knots gusting to 25 knots.

Multiple choice

18010KT in a TAF indicates

  1. winds from 180 at 10 knots

  2. winds from 010 at 18 knots

  3. winds from 018 at 10 knots

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

TAF wind notation uses 3 digits for direction followed by 2 digits for speed. 18010KT means winds from 180 degrees (south) at 10 knots.

Multiple choice

_______ is the point in a precision approach from where a missed approach must be initiated if visual reference is not established.

  1. Decision height

  2. Pressure altitude

  3. Aerodrome elevation

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Decision height (DH) or Decision Altitude (DA) is the specified height/altitude in a precision approach at which a missed approach must be initiated if the required visual reference is not established. This is a critical safety point in instrument approaches.

Multiple choice

Name the aeroplane which travels faster than sound in air?

  1. Ultrasonic plane

  2. Supersonic plane

  3. Mega sonic plane

  4. Metalloid plane

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Supersonic refers to speeds exceeding the speed of sound (Mach 1). Aircraft like the Concorde and fighter jets are supersonic planes. 'Ultrasonic' refers to sound frequencies above human hearing, not aircraft speed.

Multiple choice

Directions: The first and the last sentences of the passage are numbered 1 and 6, respectively. The rest of the passage is split into four parts named A, B, C and D. These four parts are not given in their proper order. Read the sentences and find out which of the following combinations is correct.

  1. The Wright brothers, Orville and Wilbur, were two American brothers, inventors and aviation pioneers who are credited with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight on December 17, 1903. A. This method became standard and remains standard on fixed-wing aircraft of all kinds. B. In the two years afterwards, the brothers developed their flying machine into the first practical fixed-wing aircraft. C. From the beginning of their aeronautical work, the Wright brothers focused on developing a reliable method of pilot control as the key to solving the flying problem. D. The brothers' fundamental breakthrough was their invention of three-axis control, which enabled the pilot to steer the aircraft effectively and to maintain its equilibrium.
  2. This approach differed significantly from other experimenters of the time who put more emphasis on developing powerful engines.

  1. DBAC

  2. BDCA

  3. BDAC

  4. DCAB

  5. ABDC
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

“two years afterwards” in B means two years after 1903, so B is first in order in the sentence. “This method” in A was “invention of three-axis... its equilibrium”, which is in D. Hence, the correct sequence is BDAC.

Multiple choice

An aircraft takes off at the speed of 100 km/hr at an angle of 30o runaway. What is the velocity of the aircraft along the runway?

  1. 86.6 km/hr

  2. 76 km/hr

  3. 70 km/hr

  4. 50 km/hr
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The velocity along the runway (horizontal component) = total velocity × cos(angle of takeoff). Given: v = 100 km/hr, angle = 30°. Horizontal component = 100 × cos(30°) = 100 × (√3/2) = 100 × 0.866 = 86.6 km/hr. This is the component parallel to the runway. The vertical component would be v × sin(30°) = 50 km/hr. Option B (76), C (70), and D (50 - which is the vertical component) are incorrect.

Multiple choice

Supersonic planes fly with

  1. speed less than the speed of sound

  2. the speed of sound

  3. speed greater than the speed of sound

  4. the speed of light
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Supersonic speed is defined as a rate of travel that exceeds the speed of sound in a given medium. When an aircraft travels faster than sound, it creates shock waves known as a sonic boom. This term is derived from the Latin words for 'above' and 'sound'.

Multiple choice

Which of the following will travel fastest in air?

  1. Light

  2. Sound

  3. Rocket

  4. Supersonic plane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Light travels at approximately 300,000 kilometers per second in a vacuum, which is significantly faster than sound or any physical vehicle like a rocket or plane.

Multiple choice

Which of the following is fastest in air?

  1. Sound

  2. Light

  3. Rocket

  4. Supersonic plane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Light travels at approximately 300,000 kilometers per second in a vacuum, which is significantly faster than the speed of sound or any man-made vehicle. Sound requires a medium and travels much slower.

Multiple choice

What would a pilot use an altimeter to measure?

  1. Wind speed

  2. The plane' s speed

  3. The plane' s height

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An altimeter is an instrument used to measure the altitude or height of an object above a fixed level, such as sea level.