Question

how to increse the mechenical efficiency???? (Please answer i need it quickly)​

Answer 1

Explanation:

Friction is the main factor which reduces the efficiency of a simple machine. Efficiency of a simple machine can be increased by reducing the friction. But oiling and greasing the machine is a useful way to increase the efficiency of a machine.

Answer 2

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Friction is the main factor which reduces the efficiency of a simple machine. The efficiency of a simple machine can be increased by reducing friction. But oiling and greasing the machine is a useful way to increase the efficiency of the machine.

Run the engine fuel-lean, that is, use excess air. It is well known that fuel-lean running improves efficiency.

Higher compression ratio.

We need new cycles put into practical use.

Run the engine at optimum conditions, meaning low friction (modest engine speed) and low pumping work (air throttle more open).