Aircraft Maintenance Engineering Common Entrance Test (AME CET) 2026 is a common entrance exam of national level for pursuing aviation course in India's top most institute/ university. AME CET is the platform where participants choose any institution according to their All India Rank of AME CET. AME CET offers to the participants to take admission in license, diploma, certificate & graduation courses of the aviation sector. AME CET offers upto 100% scholarship to all qualified students.
AME CET 2026 Exam Date: Second Week of May, 2026
Previous Year Question Papers
PHYSICS (Aeronautical & Applied)
1. A Venturi meter works on the principle of:
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Ans: A. Bernoulli's equation explains the relationship between pressure and velocity in a fluid, which is the basis for Venturi meters and aircraft airspeed indicators.
2. If the speed of an aircraft doubles, the lift force increases by a factor of:
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Ans: B. Lift is proportional to the square of the velocity (L ∝ v²). If velocity doubles (2v), lift becomes (2)² = 4 times.
3. The speed of sound in dry air at 0°C is approximately:
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Ans: B. The standard speed of sound at Sea Level (0°C) is 331.5 m/s.
4. Which thermodynamic cycle is used in a typical Gas Turbine (Jet) Engine?
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Ans: C. The Brayton cycle involves constant pressure combustion and is the standard for gas turbines.
5. The unit of luminous intensity is:
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Ans: C. Candela (cd) is the SI base unit for luminous intensity.
6. A body of mass 5kg is moving in a circle of radius 1m with angular velocity 2 rad/s. Centripetal force is:
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Ans: B. F = mrω² = 5 * 1 * (2)² = 5 * 4 = 20 N.
7. When light enters from air to glass, which quantity remains unchanged?
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Ans: C. Frequency is a property of the source and does not change during refraction.
8. The value of Acceleration due to gravity (g) at the center of the Earth is:
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Ans: B. At the center, the gravitational pull from all directions cancels out.
9. In a p-n junction diode, the depletion layer width:
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Ans: C. Reverse bias pulls charge carriers away from the junction, widening the depletion layer.
10. The escape velocity from Earth’s surface is nearly:
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Ans: A. 11.2 km/s is required to break free from Earth's gravitational field.
11. Pascal's Law is primarily applied in:
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Ans: B. Hydraulic systems use the principle that pressure applied to a confined fluid is transmitted undiminished.
12. Young's Modulus is a property of:
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Ans: A. It refers to the elasticity of length, applicable only to solid materials.
13. Which instrument is used to measure the altitude in aircraft?
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Ans: B. An altimeter measures the height above a fixed level (usually sea level) using atmospheric pressure.
14. The magnetic susceptibility of a superconductor is:
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Ans: C. Superconductors exhibit perfect diamagnetism (Meissner effect).
15. Total internal reflection can occur when light travels from:
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Ans: C. TIR occurs only when light moves from a denser medium to a rarer medium.
16. The specific resistance of a wire depends on its:
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Ans: C. Resistivity (Specific Resistance) is an intrinsic property of the material.
17. One Horsepower (hp) is equal to:
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Ans: A. 1 hp = 746 W (imperial standard).
18. Which mirror is used in aircraft landing lights for a parallel beam?
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Ans: B. Concave mirrors (parabolic) reflect light from the focus as a parallel beam.
19. If a wire is stretched to double its length, its resistance becomes:
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Ans: C. R = ρL/A. When L doubles, A halves (volume constant), so R becomes 4 times.
20. Surface tension of a liquid _______ with increase in temperature.
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Ans: B. Heating reduces cohesive forces, thereby decreasing surface tension.
CHEMISTRY
1. Which isotope of Uranium is used as fuel in nuclear reactors?
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Ans: B. U-235 is the fissile isotope used in most reactors.
2. Corrosion of aircraft aluminum is primarily caused by:
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Ans: B. Oxidation (reaction with oxygen/moisture) leads to the formation of aluminum oxide.
3. The pH of a neutral solution at 25°C is:
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Ans: C. 7 is neutral; below 7 is acidic, above 7 is basic.
4. Bakelite is an example of:
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Ans: B. Once set, Bakelite cannot be remolded by heating.
5. The catalyst used in the Haber process for ammonia synthesis is:
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Ans: C. Finely divided iron with molybdenum as a promoter is used.
6. Which gas is used in the tires of aircraft to prevent fire?
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Ans: C. Nitrogen is inert and does not support combustion, even at high temperatures during landing.
7. Galvanization is the coating of iron with:
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Ans: B. Zinc provides sacrificial protection to iron.
8. Which of the following is a greenhouse gas?
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Ans: C. Methane (CH₄) is a potent greenhouse gas.
9. The most abundant element in the Earth's crust is:
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Ans: C. Oxygen makes up about 46% of the crust by mass.
10. The oxidation state of Oxygen in H₂O₂ is:
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Ans: B. In peroxides, oxygen has an oxidation state of -1.
11. Which acid is present in a Lead-acid battery?
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Ans: C. Sulfuric acid acts as the electrolyte.
12. An alloy of Copper and Tin is called:
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Ans: B. Bronze = Cu + Sn; Brass = Cu + Zn.
13. The main constituent of LPG is:
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Ans: C. Butane is the primary component of Liquefied Petroleum Gas.
14. Which bond is the strongest?
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Ans: C. Triple bonds have the highest bond enthalpy and shortest length.
15. Heavy water is:
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Ans: B. Deuterium oxide is used as a moderator in nuclear reactors.
16. Temporary hardness of water is due to:
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Ans: B. Can be removed by boiling.
17. The shape of a CH₄ molecule is:
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Ans: C. sp³ hybridization leads to tetrahedral geometry.
18. Which metal is extracted from Bauxite?
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Ans: B. Aluminum is extracted via the Hall-Héroult process.
19. Reduction is a process of:
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Ans: B. OIL RIG: Oxidation Is Loss, Reduction Is Gain (of electrons).
20. Dry ice is:
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Ans: B. Solid CO₂ sublimes directly into gas.
MATHEMATICS
1. If f(x) = sin(x), then f''(x) is:
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Ans: B. f'(x) = cos(x), f''(x) = -sin(x).
2. The value of i⁴⁹ is:
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Ans: C. i⁴⁹ = (i⁴)¹² * i¹ = 1¹ * i = i.
3. The distance of point (3,4) from the origin is:
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Ans: B. √(3² + 4²) = √(9 + 16) = 5.
4. If A is a matrix of order 2x3 and B is 3x4, the order of AB is:
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Ans: A. (m x n) * (n x p) = (m x p).
5. The derivative of log(tan x) is:
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Ans: D. 1/tan x * sec²x = (cos x / sin x) * (1/cos²x) = 1/(sin x cos x) = 2/sin 2x.
6. The value of sin⁻¹(1/2) is:
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Ans: A. sin 30° = 1/2.
7. The slope of a line perpendicular to y = 2x + 3 is:
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Ans: D. m1 * m2 = -1. So, 2 * m2 = -1 => m2 = -1/2.
8. Probability of getting a sum of 7 when two dice are thrown:
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Ans: A. Pairs: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1). Total 6. Probability = 6/36 = 1/6.
9. If vectors 2i + j + k and i - 4j + λk are perpendicular, then λ is:
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Ans: B. Dot product = 0. (2*1) + (1*-4) + (1*λ) = 0 => 2 - 4 + λ = 0 => λ = 2.
10. The sum of first 100 natural numbers is:
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Ans: B. n(n+1)/2 = 100(101)/2 = 50 * 101 = 5050.
11. lim (x->0) (sin x / x) is:
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Ans: B. Fundamental limit theorem.
12. The area bounded by y = x², x-axis and x = 2 is:
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Ans: B. ∫x² dx from 0 to 2 = [x³/3] = 2³/3 - 0 = 8/3.
13. A circle has center (0,0) and radius 5. Its equation is:
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Ans: C. x² + y² = r².
14. The value of tan 45° is:
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Ans: B. tan 45° = 1.
15. If x + y = 10 and x - y = 2, then x is:
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Ans: B. Adding equations: 2x = 12 => x = 6.
16. The modulus of 3 + 4i is:
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Ans: B. |z| = √(3² + 4²) = 5.
17. The degree of differential equation (dy/dx)² + y = 0 is:
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Ans: B. Degree is the power of the highest order derivative.
18. ∫ ex dx is:
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Ans: A. ex remains unchanged under integration/differentiation.
19. What is the value of log₁₀ 1000?
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Ans: C. 10³ = 1000, so log₁₀ 1000 = 3.
20. The arithmetic mean of 10, 20, 30 is:
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Ans: B. (10+20+30)/3 = 60/3 = 20.