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Total Questions : 2607 | Page 63 of 261 pages
Question 621.

According to maximum shear stress theory, the maximum shear stress in the shaft is 


  1.    `1/2 sqrt(sigma ^2 +4 tau^2)`
  2.    `sqrt(sigma ^2 +4 tau^2)`
  3.    `1/2 [ sigma + sqrt(sigma ^2 +4 tau^2)]`
  4.    `sigma + sqrt(sigma ^2 +4 tau^2)`
 Discuss Question
Answer: Option A. -> `1/2 sqrt(sigma ^2 +4 tau^2)`


Question 622. The constant factor in case of R10 series of preferred numbers is
  1.    1.06
  2.    1.12
  3.    1.26
  4.    1.58
 Discuss Question
Answer: Option C. -> 1.26
Answer: (c).1.26
Question 623. The pipe joint mostly used for pipes carrying water at low pressures is
  1.    socket joint
  2.    nipple joint
  3.    union joint
  4.    spigot and socket joint
 Discuss Question
Answer: Option A. -> socket joint
Answer: (a).socket joint
Question 624. According to Guest's theory, the failure occurs at a point in a member when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test.
  1.    True
  2.    False
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 625. In radial cams, the follower moves
  1.    in a direction perpendicular to the cam axis
  2.    in a direction parallel to the cam axis
  3.    in any direction irrespective of cam axis
  4.    along the cam axis
 Discuss Question
Answer: Option A. -> in a direction perpendicular to the cam axis
Answer: (a).in a direction perpendicular to the cam axis
Question 626. Surface endurance limit of gear material is dependent upon its
  1.    elastic strength
  2.    yield strength
  3.    brinell hardness number
  4.    toughness
 Discuss Question
Answer: Option C. -> brinell hardness number
Answer: (c).brinell hardness number
Question 627. Which of the following statement is correct for gears?
  1.    The addendum is less than dedendum
  2.    The pitch circle diameter is equal to the product of module and number of teeth
  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
Answer: (d).all of the above
Question 628. A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)
  1.    less than 20 d
  2.    greater than 30 d
  3.    between 20 d and 30 d
  4.    equal to inside diameter of pipe
 Discuss Question
Answer: Option C. -> between 20 d and 30 d
Answer: (c).between 20 d and 30 d
Question 629. Stress concentration is caused due to
  1.    variations in load acting on a member
  2.    variations in properties of materials in a member
  3.    abrupt change of cross-section
  4.    all of these
 Discuss Question
Answer: Option C. -> abrupt change of cross-section
Answer: (c).abrupt change of cross-section
Question 630. The metal suitable for bearings subjected to light loads is
  1.    silicon bronze
  2.    white metal
  3.    monel metal
  4.    phosphor bronze
 Discuss Question
Answer: Option D. -> phosphor bronze
Answer: (d).phosphor bronze

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