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MCQs

Total Questions : 543 | Page 28 of 55 pages
Question 271. To connect two parallel and coplanar shafts the following type of gearing is used
  1.    Spur gear
  2.    Bevel gear
  3.    Spiral gear
  4.    None of the above
 Discuss Question
Answer: Option A. -> Spur gear
Question 272. The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is
  1.    Along PO
  2.    Perpendicular to PO
  3.    At 45° to PO
  4.    None of the above
 Discuss Question
Answer: Option D. -> None of the above
Question 273. A slider moves at a velocity $${\text{v}}$$ on a link revolving at $$\omega $$ rad/s. The coriolis component of acceleration is
  1.    $$\omega {\text{v}}$$
  2.    $$2\omega {\text{v}}$$
  3.    $${\omega ^2}{\text{v}}$$
  4.    $$2\omega {{\text{v}}^2}$$
 Discuss Question
Answer: Option B. -> $$2\omega {\text{v}}$$
Question 274. With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
  1.    10°
  2.    20°
  3.    30°
  4.    40°
 Discuss Question
Answer: Option D. -> 40°
Question 275. When a ship travels in a sea, which of the effect is more dangerous
  1.    Steering
  2.    Pitching
  3.    Rolling
  4.    All of the above
 Discuss Question
Answer: Option B. -> Pitching
Question 276. The Klein's diagram is useful to find
  1.    Displacement of various parts
  2.    Velocity of various parts
  3.    Acceleration of various parts
  4.    Angular acceleration of various parts
 Discuss Question
Answer: Option C. -> Acceleration of various parts
Question 277. For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that
  1.    Governor A is more sensitive than governor B
  2.    Governor B is more sensitive than governor A
  3.    Both governors A and B are equally sensitive
  4.    None of the above
 Discuss Question
Answer: Option A. -> Governor A is more sensitive than governor B
Question 278. Coriolis component is encountered in
  1.    Quick return mechanism of shaper
  2.    Four bar chain mechanism
  3.    Slider crank mechanism
  4.    Both (A) and (C) above
 Discuss Question
Answer: Option A. -> Quick return mechanism of shaper
Question 279. Which of the following governor is used to drive a gramophone?
  1.    Watt governor
  2.    Porter governor
  3.    Pickering governor
  4.    Hartnell governor
 Discuss Question
Answer: Option C. -> Pickering governor
Question 280. A point B on a rigid link AB moves with respect to A with angular velocity $$\omega $$ rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)
  1.    vBA × AB
  2.    $$\frac{{{\text{vBA}}}}{{{\text{AB}}}}$$
  3.    v2BA
  4.    $$\frac{{{{\text{v}}^2}{\text{BA}}}}{{{\text{AB}}}}$$
 Discuss Question
Answer: Option D. -> $$\frac{{{{\text{v}}^2}{\text{BA}}}}{{{\text{AB}}}}$$

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