Mechanical Engineering Questions And Answers :: Engineering Materials: part2



Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.For the allotropic forms of iron, the points of arrest are

the points where no further change occurs
constant for all metals
the points where there is no further flow of metal
the points of discontinuity
the points where major changes take place.

12.The metallic structure of mild steel is

body centred cubic
face centred cubic
hexagonal close packed
cubic structure
orthorhombic crystal.

13.Cast iron has

high tensile strength
its elastic limit close to the ultimate breaking strength
high ductility
all of the above
none of the above.

14.An important property of high silicon (12 - 18%) cast iron is the high

tenacity
brittleness
plasticity
corrosion resistance
hardness.

15.The crystal of alpha iron is

body centred cubic
face centred cubic
hexagonal close packed
cubic structure
orthorhombic crystal.

More Engineering Materials QUESTIONS AND ANSWERS available in next pages

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