AAI Junior Executive (ATC) Previous Year Question Paper 2019-20

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## AAI Junior Executive (ATC) Previous Year Question Paper 2019-20

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Q.1 A subway train starts from rest at a station and accelerates at a rate of 2ms-2 for 10s. It then runs at a constant speed for 30s and decelerates at 4ms-2 until it stop at the next station. The distance between the two stations is:

• (A) 650m
• (B) 700m
• (C) 750m
• (D) 800m

Q.2 Which of the following quantities is a vector?

• (A) Area
• (B) Volume
• (C) Angle
• (D) Speed

Q3 If the universal gravitational constant were decreasing with time, then satellite in orbit would still maintain its:

• (B) Angular momentum
• (C) Tangential Speed
• (D) Period of revolution

Q4 The velocity with which a projectile must be fired so that escapes earth’s gravitation does not depend on:

• (A) Mass of the earth
• (B) Mass of the projectile
• (C) Radius of the orbit
• (D) Gravitational constant

Q5 The second law of thermodynamics introduces the concept of:

• (A) Heat
• (B) Temperature
• (C) Entropy
• (D) Internal energy of the system