Exam Question

### (a) How the Power-to-Weight Ratio is Increased
The power-to-weight ratio, a key performance metric for marine engines, is increased by continuous development through two primary strategies: increasing the power output for a given engine weight, and decreasing the engine weight for a given power output.
**$$ \text{Power-to-Weight Ratio} = \frac{\text{Power Output (kW)}}{\text{Engine Mass (tonne)}} $$**
#### 1. Methods to Increase Power Output