Dynamics of Machinary MCQs with answers Page - 16

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. When sound interacts with materials and boundaries, it displays all the

  • (A) Heat
  • (B) Waves
  • (C) Light
  • (D) Electricity

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Q. Soft materials absorb a large amount of

  • (A) Heat energy
  • (B) Light energy
  • (C) Electromagnetic waves
  • (D) Sound energy

A

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Q. Reflection coefficient (Γ) is the rario of intensity of sound ______________.

  • (A) Reflected / Incident.
  • (B) Incident / Reflected.
  • (C) Absorbed / Reflected.
  • (D) None of the above.

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Q. Absorption coefficient (α) is the rario of intensity of sound ______________.

  • (A) Absorbed / Incident.
  • (B) Incident / Reflected.
  • (C) Absorbed / Incident.
  • (D) None of the above.

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Q. Which best describe the sound wave?

  • (A) It may be longitudinal
  • (B) It is always transverse
  • (C) It is always longitudinal
  • (D) All of the above

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Q. Which of the following can not travel through a vacuum?

  • (A) Electromagnetic wave
  • (B) Radio wave
  • (C) Sound wave
  • (D) Light wave

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Q. Through which medium does sound travel fastest?

  • (A) Air
  • (B) Steel
  • (C) Water
  • (D) Mercury

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Q. Sound wave has two main characteristics which are

  • (A) Pitch and loudness
  • (B) Tone and loudness
  • (C) Highness and loudness
  • (D) Rarefaction and compression

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Q. When waves bend away from straight lines of travel, it is called

  • (A) Reflection
  • (B) Diffraction
  • (C) Rarefaction
  • (D) Refraction

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Q. _________ is the sound power measured over the area upon which is received.

  • (A) Sound pressure
  • (B) Sound energy
  • (C) Sound intensity
  • (D) Sound pressure level

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