Question

Find the angular velocity of the crank rotating at 1200RPM?

(a) 100.86rad/sec

(b) 112.54rad/sec

(c) 125.65rad/sec

(d) 134.89rad/sec

This question was posed to me during an interview.

The question is from IC Engine in section Design of IC Engine Components of Automotive Engine Design

Answer 1

Right option is (c) 125.65rad/sec

Easy explanation: ω=\(\frac{2\times \pi\times N}{60}\)

                           =\(\frac{2\times \pi\times 1200}{60}\)

                            = 125.66 rad/sec