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A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is
- a)5
- b)10
- c)20
- d)40
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A differential pulley block has larger and smaller diameters of 100 mm...
VR=2D/D-d.
=2*100/(100-80),
=200/20,
=10.
This question is part of UPSC exam. View all Mechanical Engineering courses
Most Upvoted Answer
A differential pulley block has larger and smaller diameters of 100 mm...
**Explanation:**
A differential pulley block consists of two pulleys of different diameters connected by a single rope or chain. Let's denote the larger diameter pulley as D1 (100 mm) and the smaller diameter pulley as D2 (80 mm).
The velocity ratio of a differential pulley block is defined as the ratio of the distance moved by the effort to the distance moved by the load. It can be calculated using the formula:
Velocity Ratio = (D1 / D2)
where D1 and D2 are the diameters of the larger and smaller pulleys, respectively.
In this case, the larger diameter is 100 mm and the smaller diameter is 80 mm. Substituting these values into the formula, we get:
Velocity Ratio = (100 mm / 80 mm)
Velocity Ratio = 1.25
However, the given options for the velocity ratio are a) 5, b) 10, c) 20, and d) 40. None of these options match the calculated value of 1.25.
Therefore, the correct answer cannot be determined based on the given information. It is possible that there is an error in the question or the available options.
A differential pulley block consists of two pulleys of different diameters connected by a single rope or chain. Let's denote the larger diameter pulley as D1 (100 mm) and the smaller diameter pulley as D2 (80 mm).
The velocity ratio of a differential pulley block is defined as the ratio of the distance moved by the effort to the distance moved by the load. It can be calculated using the formula:
Velocity Ratio = (D1 / D2)
where D1 and D2 are the diameters of the larger and smaller pulleys, respectively.
In this case, the larger diameter is 100 mm and the smaller diameter is 80 mm. Substituting these values into the formula, we get:
Velocity Ratio = (100 mm / 80 mm)
Velocity Ratio = 1.25
However, the given options for the velocity ratio are a) 5, b) 10, c) 20, and d) 40. None of these options match the calculated value of 1.25.
Therefore, the correct answer cannot be determined based on the given information. It is possible that there is an error in the question or the available options.
Community Answer
A differential pulley block has larger and smaller diameters of 100 mm...
Which of the following is a scalar quantity?
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A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio isa)5b)10c)20d)40Correct answer is option 'B'. Can you explain this answer?
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