Answer :
Final answer:
A dial indicator is the best tool for measuring the radial play of a turbine shaft due to its precision. Other tools like thickness gauges, micrometers, and digital calipers are not suitable for this specific measurement. Making accurate measurements is crucial for the proper functioning of turbine shafts.
Explanation:
Understanding Radial Play Measurement
To measure the radial play of a turbine shaft accurately, a dial indicator is the most suitable instrument. This tool allows for precise measurement of small movements or displacements, making it ideal for assessing the play or clearance between the shaft and its housing. Here's a brief overview of the instruments considered:
- Dial indicator: This is the preferred choice due to its accuracy in measuring minute displacements, which is crucial for checking radial play.
- Thickness gauges: Generally used for measuring the thickness of materials, not suitable for radial measurements.
- Micrometer: While this tool is accurate, it is not typically used to measure radial play of rotating shafts.
- Digital calipers: These can measure dimensions, but a dial indicator provides superior precision for this specific application.
- Any of the above: This option is incorrect as not all tools listed can effectively measure radial play.
In conclusion, the dial indicator stands out among these tools for accurately measuring radial play in turbine shafts, ensuring the proper functioning of the machinery.
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