Applied Mechanics and Graphic Statics MCQs | Page - 1

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๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is
  • (A) 43525
  • (B) 43526
  • (C) 43709
  • (D) 43716
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (D) 43716
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. A ball is dropped from a height of 2.25 m on a smooth floor and rises to a height of 1.00 m after the bounce. The coefficient of restitution between the ball and the floor is
  • (A) 0.33
  • (B) 0.44
  • (C) 0.57
  • (D) 0.67
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (D) 0.67
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is
  • (A) 43556
  • (B) 43526
  • (C) 43558
  • (D) 43528
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) 43558
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be
  • (A) 10 m/sec
  • (B) 15 m/sec
  • (C) 20 m/sec
  • (D) 25 m/sec
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) 20 m/sec
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. A 2 m long ladder rests against a wall and makes an angle of 30ยฐ with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping?
(i) 1.0 in from the wall
(ii) 1.732 m from the wall
(iii) 1.0 m above the floor
(iv) 1.732 m above the floor
The correct answer is
  • (A) (i) and (iii)
  • (B) (i) and (iv)
  • (C) (ii) and (iii)
  • (D) (ii) and (iv)
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (D) (ii) and (iv)
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. ฮผ is coefficient of friction. A wheeled vehicle tarveling on a circular level will slip and overturn simultaneously if the ratio of its wheel distance to the height of its centroid, is
  • (A) ฮผ
  • (B) 2ฮผ
  • (C) 3ฮผ
  • (D) 1/2ฮผ
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (B) 2ฮผ
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. 'w' rad/sec is the sngular velocity of a crank whose radius is 'r'. If it makes ฮธwith inner dead centre and obliquity of the connecting rod '1' is 'ฯ†' the velocity v of the piston, is given by the equation
  • (A) ฯ‰2 (l cos ฯ† + r sin ฯ† tan ฮธ)
  • (B) ฯ‰2 (l sin ฯ† + r cos ฮฆ tan ฮธ)
  • (C) ฯ‰l sin ฯ† + r cos ฯ† tan ฮธ)
  • (D) ฯ‰2 (l sin ฯ† - r cos ฮธ tan )
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) ฯ‰l sin ฯ† + r cos ฯ† tan ฮธ)
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. 'U1' and 'U2' are the velocities of approach of two moving bodies in the same direction and their corresponding velocities of separation are 'v1' and 'v2' wton's law of collision of elasticbodies, the coefficient of restitution (e) is given by
  • (A) e = v1 - v2/u2 - u1
  • (B) e = u2 - u1/v1 - v2
  • (C) e = 2 - v1/u1 - u2
  • (D) e = v1 - v2/u2 + u1
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) e = 2 - v1/u1 - u2
๐Ÿ“Š Applied Mechanics and Graphic Statics
Q. 'P'is the force acting on a body whose mass is 'm' and acceleration is 'f'. The equation P - mf= 0, is known as
  • (A) Equation of dynamics
  • (B) Equation of dynamic equilibrium
  • (C) Equation of statics
  • (D) None of these
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (A) Equation of dynamics

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