logo

CuriousTab

CuriousTab

Discussion

Home ‣ Mechanical Engineering ‣ Theory of machines Comments
  • Question

  • In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ?/?n is


  • Options
  • A. equal to one
  • B. equal to 2
  • C. less than 2
  • D. greater than 2

  • Correct Answer
  • equal to 2 

    • Theory of machines problems

    Search Results

    • 1. When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to

    • Options
    • A. zero
    • B. one
    • C. ?/2
    • D. ?
      • Discuss
    • 2. In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to

    • Options
    • A. 0.2
    • B. 0.4
    • C. 0.6
    • D. 0.8
      • Discuss
    • 3. Shock resisting steels should have

    • Options
    • A. low wear resistance
    • B. low hardness
    • C. low tensile strength
    • D. toughness
      • Discuss
    • 4. Malleable cast iron is produced

    • Options
    • A. by adding magnesium to molten cast iron
    • B. by quick cooling of molten cast iron
    • C. from white cast iron by annealing process
    • D. none of these
      • Discuss
    • 5. Specify the sequence correctly

    • Options
    • A. Grain growth, recrystallisation, stress relief
    • B. Stress relief, grain growth, recrystallisation
    • C. Stress relief, recrystallisation, grain growth
    • D. Grain growth, stress relief, recrystallisation
      • Discuss
    • 6. For high speed engines, the cam follower should move with

    • Options
    • A. uniform velocity
    • B. simple harmonic motion
    • C. uniform acceleration and retardation
    • D. cycloidal motion
      • Discuss
    • 7. The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 8. For a twin cylinder V-engine, the crank positions for primary reverse cranks and secondary direct cranks are shown in the below figure. The engine is a

    • Options
    • A. 30° V-engine
    • B. 60° V-engine
    • C. 120° V-engine
    • D. 150° V-engine
      • Discuss
    • 9. The steering of a ship means

    • Options
    • A. movement of a complete ship up and down in vertical plane about transverse axis
    • B. turning of a complete ship in a curve towards right or left, while it moves forward
    • C. rolling of a complete ship side-ways
    • D. none of the above
      • Discuss
    • 10. The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

    • Options
    • A. dedendum
    • B. addendum
    • C. clearance
    • D. working depth
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.