Lakshya Education MCQs

Question: The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness of the body, and δ = Static deflection of the body)
Options:
A.1/2π × √(s/m)
B.1/2π × √(g/δ)
C.0.4985/√δ
D.Any one of these
Answer: Option D

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More Questions on This Topic :

Question 1. The Ackermann steering mechanism is preferred to the Davis type in automobiles because
  1.    The former is mathematically accurate
  2.    The former is having turning pair
  3.    The former is most economical
  4.    The former is most rigid
Answer: Option B
Question 2. When the axes of the first and last wheels are coaxial, then the train is known as
  1.    Simple train of wheels
  2.    Compound train of wheels
  3.    Reverted gear train
  4.    Epicyclic gear train
Answer: Option C
Question 3. A completely constrained motion can be transmitted with.
  1.    1 link with pin joints
  2.    2 links with pin joints
  3.    3 links with pin joints
  4.    4 links with pin joints
Answer: Option D
Question 4. The pitching of a ship produces forces on the bearings which act __________ to the motion of the ship.
  1.    Vertically and parallel
  2.    Vertically and perpendicular
  3.    Horizontally and parallel
  4.    Horizontally and perpendicular
Answer: Option D
Question 5. When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the ________ pulley must be taken into consideration.
  1.    Smaller
  2.    Larger
  3.    Either A or B
  4.    None of these
Answer: Option A
Question 6. The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)
  1.    l₁ = kG
  2.    l₂ = kG
  3.    l₁l₂ = kG
  4.    l₁l₂ = kG²
Answer: Option D

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