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MCQs

Total Questions : 2607 | Page 49 of 261 pages
Question 481. The rated life of a bearing varies
  1.    Directly as load
  2.    Inversely as square of load
  3.    Inversely as cube of load
  4.    Inversely as fourth power of load
 Discuss Question
Answer: Option C. -> Inversely as cube of load
Question 482. The centre to centre distance between two consecutive rivets in a row, is called
  1.    Margin
  2.    Pitch
  3.    Back pitch
  4.    Diagonal pitch
 Discuss Question
Answer: Option B. -> Pitch
Question 483. The bending stress in a curved beam is
  1.    Zero at the centroidal axis
  2.    Zero at the point other than centroidal axis
  3.    Maximum at the neutral axis
  4.    None of these
 Discuss Question
Answer: Option B. -> Zero at the point other than centroidal axis
Question 484. In a gear, having Involute teeth, the normal to the Involute is a tangent to the
  1.    Base circle
  2.    Pitch circle
  3.    Addendum circle
  4.    Dedendum circle
 Discuss Question
Answer: Option A. -> Base circle
Question 485. According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)
  1.    d = √t
  2.    d = 1.6√t
  3.    d = 2√t
  4.    d = 6√t
 Discuss Question
Answer: Option D. -> d = 6√t
Question 486. In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
  1.    Thick film
  2.    Thin film
  3.    Either A or B
  4.    None of these
 Discuss Question
Answer: Option B. -> Thin film
Question 487. The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for
  1.    Reducing stress concentration
  2.    Ease of manufacture
  3.    Safety
  4.    Fullering and caulking
 Discuss Question
Answer: Option D. -> Fullering and caulking
Question 488. Transverse fillet welded joints are designed for
  1.    Tensile strength
  2.    Compressive strength
  3.    Shear strength
  4.    Bending strength
 Discuss Question
Answer: Option A. -> Tensile strength
Question 489. In a flange coupling, the bolts are subjected to
  1.    Tensile stress
  2.    Compressive stress
  3.    Shear stress
  4.    None of these
 Discuss Question
Answer: Option C. -> Shear stress
Question 490. A V-belt designated as B 4430 LP has
  1.    4430 mm as diameter of small pulley
  2.    4430 mm as nominal pitch length
  3.    4430 mm as diameter of large pulley
  4.    4430 mm as centre distance between pulleys
 Discuss Question
Answer: Option B. -> 4430 mm as nominal pitch length

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