Engineering Materials MCQs

fixed structure at all temperatures

atoms distributed in random pattern

different crystal structures at different temperatures

any one of the above

superior

inferior

increase hardenability

reduce machinability

increase wear resistance

increase endurance strength

pearlite

ferrite

cementite

martensite

alloy and carbon tool steel

magnet steel

high speed tool steel

all of these

ductile material

malleable material

brittle material

tough material

zinc, magnesium, cobalt, cadmium, antimony and bismuth

gamma-iron, aluminium, copper, lead, silver and nickel

alpha-iron, tungsten, chromium and molybdenum

none of the above

carburising

normalising

annealing

tempering

pig iron

cast iron

wrought iron

steel

Silicon bronze

Aluminium bronze

Gun metal

Babbit metal