Final answer:
In mechanical engineering, measuring valve spring squareness can be done by rotating the spring as suggested by Tech A or by rolling the spring on a surface plate as suggested by Tech B, both methods aim to ensure the spring's proper function. option c is correct
Step-by-step explanation:
option c is correct The question concerns a procedure in mechanical engineering, specifically in the context of valve spring measurements for engines. When it comes to measuring the squareness of a valve spring, there are a couple of methods that technicians may use to ensure accuracy. Tech A suggests that the valve spring must be rotated while measuring squareness to check for any inconsistencies in its shape. This is done to see if the spring’s axis is perpendicular to its base, which is crucial for its function.
On the other hand, Tech B proposes a method in which the spring is rolled on a surface plate to test for squareness. By observing whether the spring rolls evenly or wobbles, the technician can determine if the spring is indeed square or if there may be an issue with its shape.
In automotive technology, the spring squareness refers to the deviation from a perfectly flat surface of the valve spring. Rotating the spring while measuring allows technicians to check if the spring is perfectly square or if it has any irregularities.
Both Tech A and Tech B are correct in their statements. Rotating the spring is necessary to accurately measure squareness, so both A and B are correct.