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MCQs

Total Questions : 2607 | Page 57 of 261 pages
Question 561. The material commonly used for crane hooks is
  1.    Cast iron
  2.    Wrought iron
  3.    Mild steel
  4.    Aluminium
 Discuss Question
Answer: Option B. -> Wrought iron
Question 562. During hot working of metals,
  1.    Porosity of the metal is largely eliminated
  2.    Grain structure of the metal is refined
  3.    Mechanical properties are improved due of refinement of grains
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 563. Which of the following statement is correct for gears?
  1.    The pitch circle diameter is equal to the product of module and number of teeth
  2.    The addendum is less than dedendum
  3.    The pitch circle is always greater than the base circle
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 564. Which is correct statement?
  1.    A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
  2.    A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel
  3.    Both will be equally rigid
  4.    Which one is rigid will depend on several other factors
 Discuss Question
Answer: Option B. -> A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel
Question 565. Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is
  1.    F + P
  2.    F.P
  3.    P
  4.    F
 Discuss Question
Answer: Option A. -> F + P
Question 566. A hot short metal is
  1.    Brittle when cold
  2.    Brittle when hot
  3.    Brittle under all conditions
  4.    Ductile at high temperature
 Discuss Question
Answer: Option B. -> Brittle when hot
Question 567. The taper on cotter varies from
  1.    1 in 24 to 1 in 20
  2.    1 in 15 to 1 in 10
  3.    1 in 32 to 1 in 24
  4.    1 in 48 to 1 in 24
 Discuss Question
Answer: Option D. -> 1 in 48 to 1 in 24
Question 568. For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be
  1.    4
  2.    6
  3.    8
  4.    10
 Discuss Question
Answer: Option A. -> 4
Question 569. For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be
  1.    8
  2.    6
  3.    4
  4.    10
 Discuss Question
Answer: Option A. -> 8
Question 570. The property of a bearing material which has the ability to accommodate small particles of dust, grit etc. without scoring the material of the journal, is called
  1.    Bondability
  2.    Embeddability
  3.    Comformability
  4.    Fatigue strength
 Discuss Question
Answer: Option B. -> Embeddability

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