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Purpose of testing an internal combustion engine: identify the most complete reason. Context: Engine tests can validate design data, provide performance information not available by calculation, and satisfy customer acceptance criteria. Choose the best option.

Difficulty: Easy

To determine information not obtainable by calculations
To confirm doubtful design data
To satisfy the customer about performance
All of the above

Correct Answer: All of the above

Explanation:

Given
Engine testing serves multiple purposes, not just one.

Concept/Approach
Testing provides (i) empirical data beyond analytical reach, (ii) validation of assumed/estimated parameters used in design, and (iii) evidence of performance for customers.

Final Answer
All of the above.

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