Dynamics of Machinary MCQs with answers Page - 8

Here, you will find a collection of MCQ questions on Dynamics of Machinary. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Basic elements of noise control are

  • (A) Source ,Path ,Receiver of noise
  • (B) Amplitude and Frequency
  • (C) Time period
  • (D) A and B both

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Q. All sound is noise.

  • (A) TRUE
  • (B) False
  • (C) none
  • (D) none

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Q. Which type of vibrations are also known as transient vibrations?

  • (A) Undamped vibrations
  • (B) Damped vibrations
  • (C) Torsional vibrations
  • (D) Transverse vibrations

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Q. During transverse vibrations, shaft is subjected to which type of stresses?

  • (A) Tensile stresses
  • (B) Torsional shear stress
  • (C) Bending stresses
  • (D) All of the above

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Q. What are deterministic vibrations?

  • (A) Vibrations caused due to known exciting force
  • (B) Vibrations caused due to unknown exciting force
  • (C) Vibrations which are aperiodic in nature
  • (D) None of the above

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Q. Which of the following vibrations are classified according to magnitude of actuating force?

  • (A) Torsional vibrations
  • (B) Deterministic vibrations
  • (C) Transverse vibrations
  • (D) All of the above

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Q. In which type of vibrations, amplitude of vibration goes on decreasing every cycle?

  • (A) Damped vibrations
  • (B) Undamped vibrations
  • (C) Both a. and b.
  • (D) None of the above

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Q. The resonant frequency of a mass-spring system depends upon ________

  • (A) stiffness
  • (B) surface density
  • (C) depth of air space
  • (D) all of the above

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Q. Calculate equivalent stiffness of the spring for the system shown below, which has spring stiffness of 3000 N/m

  • (A) 1000 N/m
  • (B) 2250 N/m
  • (C) 2000 N/m
  • (D) None of the above

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Q. Which of the following is incorrect regarding inertia force?

  • (A) Imaginary force
  • (B) Acts upon a rigid body
  • (C) Brings the body to equilibrium
  • (D) Same direction as of accelerating force

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