Which are the types of material used in Babbit type bearing material?(a) Lead with a small quantity of copper and antimony(b) Steal with a small quantity of zinc and tin(c) Zinc with a small quantity of lead and copper(d) Silver with a small quantity of brass and aluminumThis question was posed to me by my school principal while I was bunking the class.This question is from Valve Timing Technologies in section Valve Timing Technologies of Automotive Engine Design

Which are the types of material used in Babbit type bearing material?(

1.	Which are the types of material used in Babbit type bearing material?(a) Lead with a small quantity of copper and antimony(b) Steal with a small quantity of zinc and tin(c) Zinc with a small quantity of lead and copper(d) Silver with a small quantity of brass and aluminumThis question was posed to me by my school principal while I was bunking the class.This question is from Valve Timing Technologies in section Valve Timing Technologies of Automotive Engine Design
Answer» The CORRECT option is (a) LEAD with a small quantity of COPPER and antimony To elaborate: Babbit is made by either lead or tin-based and contains a small quantity of copper and antimony. It is the oldest bearing material for automobile engines and is still used in application where soft material SHAFT under the moderate LOADS and speeds is employed.

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