The maximum achievable efficiency of the chain drives is about 80%.
(a) It is about 50%
(b) It is about 96-98%
(c) It is about 75%
(d) It is always <40%
This question requires clarification and I found it in my unit test.
This practice question is from the Chain Drives unit in Friction Clutches, Brakes, Belt Drives and Chain Drives of Machine Design