Physics
The correct relationship between the mechanical advantage (M.A.), velocity ratio (V.R.) and efficiency (η) is:
- M.A. = η x V.R.
- V.R. = η x M.A.
- η = M.A. x V.R.
- None of these
Related Questions
Which of the following statements is incorrect?
- For a machine, velocity ratio does not change.
- Due to friction, mechanical advantage of a machine increases.
- For an ideal machine, work output is equal to the work input.
- For an ideal machine, mechanical advantage is numerically equal to the velocity ratio
Unit of velocity ratio is:
- Nm
- Joule
- Newton
- No unit
Which of the following relations is wrong?
- Work input = Effort x Displacement of effort
- Work output = Load x Displacement of load
- Efficiency = Work input / Work output
- Mechanical advantage = Velocity ratio x Efficiency
If the effort needed is less than the load, then mechanical advantage of the machine is:
- Greater than 1
- Less than 1
- Equal to one
- None of these