How is the mechanical advantage related with the velocity ratio for an actual machine? State whether the efficiency of such a machine is equal to $1$ , less than $1$ or more than $1$ .

M . A > V . R

., less than

1

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M . A = V . R

., equal to

1

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M . A < V . R

., less than

1

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M . A < V . R

., more than

1

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Solution

The correct option is C $M . A < V . R$ ., less than $1$
Efficiency ( $η$ ) $=$ $\frac{m e c h a n i c a l a d v a n t a g e (M . A)}{v e l o c i t y r a t i o (V . R)}$
Due to some error efficiency of such machine is always less than 1.
So, $η$ < $1$
$\frac{M . A}{V . R}$ < $1$
Hence, $M . A < V . R$

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How is the mechanical advantage related with the velocity ratio for an actual machine? State whether the efficiency of such a machine is equal to 1, less than 1 or more than 1.

The correct option is C M.A<V.R., less than 1Efficiency (η) =mechanical advantage (M.A)velocity ratio (V.R)Due to some error efficiency of such machine is always less than 1.So, η < 1M.AV.R < 1Hence, M.A<V.R

How is the mechanical advantage related with the velocity ratio for an actual machine? State whether the efficiency of such a machine is equal to $1$ , less than $1$ or more than $1$ .