Question

Find the crank radius when the length of the stroke is 80mm?

(a) 10mm

(b) 40mm

(c) 30mm

(d) 50mm

This question was posed to me in an online interview.

The above asked question is from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design

Answer 1

The correct answer is (b) 40mm

The best explanation: Crank radius r=\(\frac{l}{2}\)

                                                =\(\frac{80}{2}\)

                                                =40mm