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MCQs

Total Questions : 2607 | Page 10 of 261 pages
Question 91. In V-belt drive, belt touches
  1.    At bottom
  2.    At sides only
  3.    Both at bottom and sides
  4.    Could touch anywhere
 Discuss Question
Answer: Option B. -> At sides only
Question 92. The efficiency of a riveted joint is equal to
  1.    Pt /P
  2.    Ps /P
  3.    Pc /P
  4.    Least of Pt, Ps and Pc/P
 Discuss Question
Answer: Option D. -> Least of Pt, Ps and Pc/P
Question 93. The strength of a riveted joint is equal to
  1.    Tearing strength of plate (Pt)
  2.    Shearing strength of rivet (Ps)
  3.    Crushing strength of rivet (Pc)
  4.    Least value of Pt Ps and Pc
 Discuss Question
Answer: Option D. -> Least value of Pt Ps and Pc
Question 94. When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the
  1.    Initial tension
  2.    External load applied
  3.    Sum of the initial tension and external load applied
  4.    Initial tension or external load, whichever is greater
 Discuss Question
Answer: Option C. -> Sum of the initial tension and external load applied
Question 95. In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing
  1.    Remains constant at all speeds
  2.    Is minimum at zero speed and increases monotonically with increase in speed
  3.    Is maximum at zero speed and decreases monotonically with increase in speed
  4.    Becomes minimum at an optimum speed and then increases with further increase in speed
 Discuss Question
Answer: Option D. -> Becomes minimum at an optimum speed and then increases with further increase in speed
Question 96. When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the
  1.    Initial tension
  2.    External load applied
  3.    Sum of the initial tension and external load applied
  4.    Initial tension or external load, whichever is greater
 Discuss Question
Answer: Option D. -> Initial tension or external load, whichever is greater
Question 97. In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to
  1.    Increase the key length
  2.    Increase the key depth
  3.    Increase the key width
  4.    Decrease the key length
 Discuss Question
Answer: Option A. -> Increase the key length
Question 98. An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called
  1.    Addendum circle
  2.    Dedendum circle
  3.    Pitch circle
  4.    Clearance circle
 Discuss Question
Answer: Option C. -> Pitch circle
Question 99. According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be
  1.    45 to 60%
  2.    63 to 70%
  3.    70 to 83%
  4.    80 to 90%
 Discuss Question
Answer: Option C. -> 70 to 83%
Question 100. In a marine flange coupling, the thickness of flange is taken as
  1.    d/2
  2.    d/3
  3.    3d/4
  4.    d/4
 Discuss Question
Answer: Option B. -> d/3

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