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प्रश्न
With reference to the terms mechanical advantage, velocity ratio and efficiency of a machine, name and define the term that will not change for the machine of a given design.
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उत्तर
The term is Velocity Ratio (V.R.).
Velocity ratio of a machine is the ratio of the distance moved by the effort to the distance moved by the load in the same time.
`V.R = "Distance moved by effort"
/"Distance moved by load"`
For a machine of a given design, the velocity ratio remains constant.
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