Question

Calculate the pitch of the coil when the free length is 131.11mm and N1 is 15mm?

(a) 29.6mm

(b) 9.37mm

(c) 20mm

(d) 12.3mm

This question was posed to me in an interview for internship.

Origin of the question is IC Engine in division Design of IC Engine Components of Automotive Engine Design

Answer 1

The correct option is (b) 9.37mm

To explain I would say: Pitch of coils=\(\frac{Free \, length}{(Nt-1)}\)

                                              =\(\frac{131.11}{(15-1)}\)

                                              = 9.37mm