Lakshya Education MCQs

Question: The C.G. of a thin hollow cone of height ‘h’, above its base lies on the axis, at a height of
Answer: Option C

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Question 1. 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
Answer: Option A
Question 2. 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
Answer: Option B
Question 3. If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is
  1.    500 meters
  2.    1000 meters
  3.    1500 meters
  4.    2000 meters
Answer: Option D
Question 4. 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
Answer: Option C
Question 5. In simple harmonic motion, acceleration of a particle is proportional to
  1.    Rate of change of velocity
  2.    Displacement
  3.    Velocity
  4.    Direction
Answer: Option B
Question 6. 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
Answer: Option B

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