Mechanical Engineering Questions And Answers :: Engineering Materials: part2



Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part2 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

1.Wrought iron is

hard
high in strength
highly resistant to corrosion
heat treated to change its properties
least resistant to corrosion.

2.Steel contains

80% or more iron
50% or more iron
alloying elements like chromium, tungsten nickel and copper
elements like phosphorus, sulfur and silicon in varying quantities
high quantities of sulfur.

3.Cast iron is characterised by minimum of following %age of carbon

0.2%
0.8%
1.3%
2%
6.3%.

4.An important property of malleable cast iron in comparison to grey cast iron is the high

compressive strength
ductility
carbon content
hardness
surface finish.

5.In mottled cast iron, carbon is available in

free form
combined form
nodular form
flat form
partly in free and partly in combined state.

More Engineering Materials QUESTIONS AND ANSWERS available in next pages

    Health is the greatest gift, contentment is the greatest wealth -Buddha