Question

In the formula sinΦ=\(\frac{sin⁡θ}{(l/r)}\), what is Φ?

(a) The angle of inclination of the crankshaft with the line of action

(b) The angle of inclination of connecting rod with the line of action

(c) The angle of inclination of the crankshaft with the line of dead centers

(d) The angle of inclination of connecting rod with the line of dead centers

I got this question in an interview for internship.

This interesting question is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

Answer 1

Correct option is (d) The angle of inclination of connecting rod with the line of dead centers

To elaborate: In the formula sinΦ=\(\frac{sin⁡θ}{(l/r)}\), Φ is the angle of inclination of connecting rod with the line of dead centers and ϴ is the angle of inclination of the crank with a line of dead centers.