Dynamics of Machinary MCQs with answers Page - 1

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Q. The velocity of a particle moving with simple harmonic motion is _______ at the mean position.

  • (A) Zero
  • (B) Minimum
  • (C) Maximum
  • (D) None of the mentioned

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Q. The maximum acceleration of a particle moving with simple harmonic motion is ____.

  • (A) ω
  • (B) ω.r
  • (C) ω / 2 π
  • (D) 2 π / ω

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Q. At the mean position, the potential energy of the system is _______.

  • (A) Zero
  • (B) Minimum
  • (C) Maximum
  • (D) None of the mentioned

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Q. In a spring-mass-damper system, which of the following force is considered?

  • (A) Spring force
  • (B) Damping force
  • (C) Accelerating force
  • (D) All of the above

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Q. Frequency is equal to ______.

  • (A) Time period
  • (B) 1/time period
  • (C) ω * time period
  • (D) ω /time period

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Q. When the body vibrates under the influence of external force, then the body is said to be under ___________ .

  • (A) Free vibrations
  • (B) Natural vibrations
  • (C) Forced vibrations
  • (D) Damped vibrations

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Q. A vertical spring-mass system has a mass of 0.5 kg and an initial deflection of 0.2 cm. Find the spring stiffness.

  • (A) 345 N/m
  • (B) 245 N/m
  • (C) 3452 N/m
  • (D) 2452 N/m

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Q. A system has a mass of 0.5 kg and spring stiffness of 2452 N/m. Find the natural frequency of the system.

  • (A) 5.14 Hz
  • (B) 9.14 Hz
  • (C) 11.14 Hz
  • (D) 28.14 Hz

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Q. What is meant by node point?

  • (A) The point at which amplitude of vibration is maximum
  • (B) The point at which amplitude of vibration is minimum
  • (C) The point at which amplitude of vibration is zero
  • (D) None of the above

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Q. The motion of a system executing harmonic motion with one natural frequency is known as _______

  • (A) principal mode of vibration
  • (B) natural mode of vibration
  • (C) both a. and b.
  • (D) none of the above

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