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MCQs

Total Questions : 2100 | Page 28 of 210 pages
Question 271. Sense of tangential acceleration of a link
  1.    Is same as that of velocity
  2.    Is opposite to that of velocity
  3.    Could be either same or opposite to velocity
  4.    Is perpendicular to that of velocity
 Discuss Question
Answer: Option C. -> Could be either same or opposite to velocity
Question 272. When a point at the end of a link moves with constant angular velocity, its acceleration will have
  1.    Radial component only
  2.    Tangential component only
  3.    Coriolis component only
  4.    Radial and tangential components both
 Discuss Question
Answer: Option A. -> Radial component only
Question 273. When a point moves along a straight line, its acceleration will have
  1.    Radial component only
  2.    Tangential component only
  3.    Coriolis component only
  4.    Radial and tangential components both
 Discuss Question
Answer: Option B. -> Tangential component only
Question 274. For a kinematic chain to be considered as mechanism
  1.    Two links should be fixed
  2.    One link should be fixed
  3.    None of the links should be fixed
  4.    There is no such criterion
 Discuss Question
Answer: Option B. -> One link should be fixed
Question 275. In a simple train of wheels, the velocity ratio __________ the intermediate wheels.
  1.    Depends upon
  2.    Is independent of
  3.    Either A or B
  4.    None of these
 Discuss Question
Answer: Option B. -> Is independent of
Question 276. The power of a Porter governor is equal to
  1.    [c²/(1 + 2c)] (m + M) g.h
  2.    [2c²/(1 + 2c)] (m + M) g.h
  3.    [3c²/(1 + 2c)] (m + M) g.h
  4.    [4c²/(1 + 2c)] (m + M) g.h
 Discuss Question
Answer: Option D. -> [4c²/(1 + 2c)] (m + M) g.h
Question 277. Which gear is used for connecting two coplanar and intersecting shafts?
  1.    Spur gear
  2.    Helical gear
  3.    Bevel gear
  4.    None of the above
 Discuss Question
Answer: Option C. -> Bevel gear
Question 278. According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a
  1.    Straight line
  2.    Parabolic curve
  3.    Triangle
  4.    Rectangle
 Discuss Question
Answer: Option A. -> Straight line
Question 279. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.
  1.    Infinity
  2.    Zero
  3.    Any +ve value
  4.    Any -ve value
 Discuss Question
Answer: Option B. -> Zero
Question 280. The train value of a gear train is
  1.    Equal to velocity ratio of a gear train
  2.    Reciprocal of velocity ratio of a gear train
  3.    Always greater than unity
  4.    Always less than unity
 Discuss Question
Answer: Option B. -> Reciprocal of velocity ratio of a gear train

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