To calculate the efficiency in percentage, I need to identify the relevant data from the images you provided. I'll extract the necessary information from the tables and figures to perform the calculation.

I'll start by analyzing the images.### Image 1 Analysis:

The first image contains a graph and two tables. It seems to be part of a simulation or an experiment, showing some sort of fluid or aerodynamic behavior, perhaps related to a nozzle or a similar structure. However, for calculating efficiency, we likely need data from the tables.

Image 2 Analysis:

The second image shows data in a table format, possibly from an Excel sheet. The columns are labeled $Q$, $H$, $PC$, and $IC$. These might represent various parameters needed to calculate efficiency, like power input and output or other relevant factors.

Efficiency Calculation:

Efficiency ($\eta$) is generally calculated using the formula:

$\eta = \frac{\text{Useful Output}}{\text{Input}} \times 100\%$

To apply this formula, I need to identify which columns represent the "Useful Output" and the "Input" from the tables.

Steps:

1. I will need to identify which columns represent power or energy values.
2. Calculate the efficiency using the formula.

I'll now extract this data and calculate the efficiency.The efficiencies for the different data points, calculated as percentages, are as follows:

1. 99.90%
2. 95.52%
3. 99.85%
4. 96.14%
5. 91.63%
6. 91.67%
7. 89.30%

These values represent the ratio of the output power ($PC$) to the input power ($IC$) multiplied by 100, giving the efficiency as a percentage.

Would you like more details on the calculation or further analysis? Here are some related questions:

1. How does the variation in input power ($IC$) affect the efficiency?
2. What factors could cause fluctuations in efficiency across different data points?
3. How can the efficiency be improved in such a system?
4. What are the typical causes of inefficiency in systems like the one shown in the images?
5. Can you compare this efficiency to a benchmark or ideal value?

Tip: Always check for outliers in efficiency calculations, as they may indicate issues with the system or measurement errors.