Question

For a slider crank mechanism, the total no. of dead centres are _____

(a) 0

(b) 1

(c) 2

(d) 3

The question was posed to me in class test.

This intriguing question originated from Klien’s Construction in chapter Inertia Forces in Reciprocating Parts of Machine Dynamics

Answer 1

Correct choice is (c) 2

For explanation: Dead centres are locations where the velocity of the piston is 0, hence there are only two locations where this is possible in the slider crank mechanism.