Question

Which of the following is advantage for aluminium alloy cylinder block over grey cast iron?

(a) density

(b) machinability

(c) co-efficient of thermal expansion

(d) thermal conductivity

I got this question by my college professor while I was bunking the class.

Enquiry is from Cylinder Block topic in section Engine Construction & Wheel Assembly of Automobile Engineering

Answer 1

Right choice is (a) density

Easiest explanation: Density of aluminium is one-third of cast iron and it is a light weight material which is advantage over cast iron.