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MCQs

Total Questions : 1284 | Page 9 of 129 pages
Question 81. The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be
  1.    sin (α + β)/sin (α - β)
  2.    sin (α - β)/sin (α + β)
  3.    cos (α - β)/cos (α + β)
  4.    tan (α - β)/tan (α + β)
 Discuss Question
Answer: Option B. -> sin (α - β)/sin (α + β)
Question 82. The velocity of a body fallen from height ‘h’, on reaching the ground is given by
  1.    v = 2gh
  2.    v = 2gh²
  3.    v = √(2gh)
  4.    v = 1/√(2gh)
 Discuss Question
Answer: Option C. -> v = √(2gh)
Question 83. The C.G. of a right circular cone lies on its axis of symmetry at a height of
  1.    h/2
  2.    h/3
  3.    h/4
  4.    h/5
 Discuss Question
Answer: Option C. -> h/4
Question 84. Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of
  1.    One-half of the total height above base
  2.    One-third of the total height above base
  3.    One-fourth of the total height above base
  4.    None of these
 Discuss Question
Answer: Option B. -> One-third of the total height above base
Question 85. The apparent weight of a man in a moving lift is less than his real weight when it is going down with
  1.    Uniform speed
  2.    An acceleration
  3.    Linear momentum
  4.    Retardation
 Discuss Question
Answer: Option B. -> An acceleration
Question 86. In simple harmonic motion, acceleration of a particle is proportional to
  1.    Rate of change of velocity
  2.    Displacement
  3.    Velocity
  4.    Direction
 Discuss Question
Answer: Option B. -> Displacement
Question 87. The bending moment in an arch is proportional to
  1.    Vertical ordinate of funicular polygon
  2.    Vertical ordinate of the arch
  3.    Intercept between the arch axis and the funicular polygon
  4.    None of these
 Discuss Question
Answer: Option C. -> Intercept between the arch axis and the funicular polygon
Question 88. The C.G. of a thin hollow cone of height ‘h’, above its base lies on the axis, at a height of
  1.    h/3
  2.    h/4
  3.    2h/3
  4.    3h/4
 Discuss Question
Answer: Option C. -> 2h/3
Question 89. The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at
  1.    Supports
  2.    Quarter span
  3.    Mid span
  4.    None of the above
 Discuss Question
Answer: Option A. -> Supports
Question 90. The displacement of a particle which moves along a straight line is given by S = 4t³ + 3t²- 10 where ‘S’ is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is
  1.    ½ sec
  2.    1 sec
  3.    1.2 sec
  4.    1.5 sec
 Discuss Question
Answer: Option B. -> 1 sec

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