Lakshya Education MCQs

Question: Transmission of power from the engine to the rear axle of an automobile is by means of
Options:
A. Compound gears
B. Worm and wheel method
C. Hooke's joint
D. Crown gear
Answer: Option C

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Question 1. In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to
  1.     Minimize the effect of primary forces
  2.     Minimize the effect of secondary forces
  3.     Have perfect balancing
  4.     To start the locomotive quickly
Answer: Option B
Question 2. The ratio of the driving tensions for v-belts is __________ times that of flat belts.(where β = semi-angle of the groove)
  1.     sinβ
  2.     cosβ
  3.     cosecβ
  4.     secβ
Answer: Option C
Question 3. In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to
  1.     Minimize the effect of primary forces
  2.     Minimize the effect of secondary forces
  3.     Have perfect balancing
  4.     To start the locomotive quickly
Answer: Option B
Question 4. In a single slider crank chain
  1.     Each of the four pairs is a turning pair
  2.     One is a turning pair and three are sliding pairs
  3.     Two are turning pairs and two are sliding pairs
  4.     Three are turning pairs and one is a sliding pair
Answer: Option D
Question 5. The ratio of the driving tensions for v-belts is __________ times that of flat belts.(where β = semi-angle of the groove)
  1.     sinβ
  2.     cosβ
  3.     cosecβ
  4.     secβ
Answer: Option C
Question 6. 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
Answer: Option C

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