Silicon percentage in iron castings to have maximum hardness should be about__________________?

Related Mcqs:

In cold working of metal as compared to its hot working____________________?

A. Cracks and blow holes are eliminated B. Ductility and impact strength improves C. Appreciable strain hardening is produced D. Yield stress, hardness and fatigue strength is not at all affected...

Inconel is an alloy of_________________?

A. Tin, zinc and nickel B. Iron, nickel and chromium C. Copper and nickel D. Copper and tin...

Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system ?

A. High silicon iron, silicon rubber, Kel-F and Teflon B. Mild steel and stainless steel C. Cast iron, tin and aluminium D. Copper, nickel and Monel...

Visco-elastic behaviour of materials which is time dependent is common in______________?

A. Plastics B. Crystalline solid C. Non-crystalline solids D. Non-crystalline organic polymer...

Thermoplastic resins are those polymers, which____________________?

A. Has decreased plasticity at increasing temperature B. Cannot be moulded C. Easily deform under pressure at high temperature D. None of these...