Design of Machine Elements MCQs with answers Page - 17

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Q. A single transverse weld is preferred over

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. Transverse fillet weld can be designed using the same equations as of parallel fillet weld.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. Which of the following are functions of bearings?

  • (A) ensure free rotation of shaft with minimum friction
  • (B) holding shaft in a correct position
  • (C) transmit the force of the shaft to the frame
  • (D) all of the listed

A

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Q. Which of the following is measure of stiffness?

  • (A) modulus of elasticity
  • (B) modulus of plasticity
  • (C) resilience
  • (D) toughness

A

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Q. Which of the following facts are true for resilience?

  • (A) ability of material to absorb energy when deformed elastically
  • (B) ability to retain deformation under the application of load or after removal of load
  • (C) ability of material to absorb energy when deformed plastically
  • (D) none of the mentioned

A

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Q. Shot blasting process improves the endurance limit of the component.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. While designing a forging, the profile is selected such that the fibrous lines are parallel to the tensile forces and perpendicular to shear forces.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. What is the expression of the bending equation?

  • (A) m/i = σ/y = e/r
  • (B) m/r = σ/y = e/i
  • (C) m/y = σ/r = e/i
  • (D) m/i = σ/r = e/y

A

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Q. The critical value at which crack extension occurs is called

  • (A) stress intensity factor
  • (B) toughness
  • (C) fracture toughness
  • (D) none of the mentioned

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Q. If for a curved beam of trapezoidal cross section, radius of neutral axis is 89.1816mm and radius of centroidal axis is 100mm, then find the bending stress at inner fibre whose radius is 50mm. Area of cross section of beam is 7200mm² and the beam is loaded with 100kN of load.

  • (A) 97.3
  • (B) 95.8
  • (C) 100.6
  • (D) none of the mentioned

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