Mechanical Interview Questions with answers for Freshers / Experienced -15

What is mechanical efficiency?

The numerical representation that measures the effectiveness of a machine.

The "Machine Efficiency"

- In every machine little work is wasted while trying to overcome the force of friction.

- To calculate the mechanical efficiency, divide the output work by the input work, then you have to multiply it by 100.

Formula:

Mechanical Efficiency = Output Force/ Input Force x 100

Difference between Mechanical Efficiency and Mechanical Advantage:

Mechanical advantage is the number of times a machine increases the input force while mechanical efficiency is the ratio of output work to input work.

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