Answer :
True. The statement about the dial indicator interfering with loosening anchor bolts during shaft deflection measurement is true. The dial indicator's positioning around the shaft can obstruct bolt adjustments, limiting accuracy. A more sensitive digital device could potentially improve measurement accuracy.
In the context of aligning machinery, a dial indicator is often used to measure deviations or deflections. However, due to its physical positioning around the shaft and the bolts, it can indeed interfere with the process of loosening or tightening the anchor bolts. This interference can prevent accurate measurements and adjustments, highlighting a potential limitation in the method.
Other factors that might limit the accuracy of null measurements include environmental vibrations, misaligned setup, and user error. Using a digital device more sensitive than a galvanometer could potentially improve accuracy, as digital devices often provide higher precision and finer resolution in measurements.
