Which of the following is not true for coincidence?
(a) Two axes merged in each other
(b) Coincidence and perpendicularity are same
(c) One axis extends beyond the other
(d) Sometimes coincidence is used with is used with more general meaning of parallelism
I have been asked this question in an interview for job.
Enquiry is from Parallelism, Equidistance and Coincidence in section Straightness, Flatness, Squareness, Parallelism, Circularity and Rotation of Engineering Metrology