Two technicians are discussing how to repair minor scratches on the seal surface of a shaft [the part of the shaft the seal rides on]. Technician A uses fine emery cloth to polish the seal surface. Technician B uses a mill file. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Question

Quizplus · Accepted Answer

Using fine emery cloth is an appropriate method for polishing and repairing minor scratches on the seal surface of a shaft, as it is gentle enough to smooth out imperfections without causing further damage. A mill file is too coarse and could cause additional damage to the surface.

Two Technicians Are Discussing How to Repair Minor Scratches on the Seal