Quiz

Question: The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is
Options:
A. Less than 1
B. Equal to 1
C. Between 1 and 2
D. Greater than 2
Answer: Option A

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Question 1. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. the mechanical advantage of the lifting machine is
  1.     15
  2.     18
  3.     20
  4.     26
Answer: Option C
Question 2. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. the velocity ratio of the lifting machine is
  1.     50
  2.     55
  3.     60
  4.     65
Answer: Option A
Question 3. Coefficient of friction depends on
  1.     Nature of surfaces only
  2.     Area of contact only
  3.     Both (A) and (B)
  4.     None of the above
Answer: Option A
Question 4. The condilion for a lifting machine to be reversible is that its efficiency should be
  1.     less than 50%
  2.     more than 50%
  3.     more than 66.67%
  4.     equal to 100%
Answer: Option B
Question 5. Coefficient of friction depends on
  1.     Nature of surfaces only
  2.     Area of contact only
  3.     Both (A) and (B)
  4.     None of the above
Answer: Option A
Question 6. The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm and frequency 2 vibrations/sec, is
  1.     188.5 m/sec
  2.     18.85 m/sec
  3.     1.885 m/sec
  4.     0.18845 m/sec
Answer: Option C

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