Engineering Materials - Mechanical Engineering Questions and Answers

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The hardness of steel depends upon the

amount of cementite it contains

amount of carbon it contains

contents of alloying elements

method of manufacture of steel

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Cartidge brass can be

cold rolled into sheets

drawn into wires

formed into tube

any one of these

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Which of the following statement is correct?

The product produced by blastfurnace is called cast iron.

The pig iron is the name given to the product produced by cupola.

The cast iron has high tensile strength.

The chilled cast iron has no graphite.

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Blast furnace is used to produce

pig iron

cast iron

wrought iron

steel

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In flame hardening, oxy-acetylene flame is used.

Yes

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Which of the following statements are true for annealing of steels?

Steels are heated to 500 to 700° C

Cooling is done slowly and steadily

Internal stresses are relieved

all of these

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The ability of a material to undergo large permanent deformation with the application of a tensile force, is called ductility.

Correct

Incorrect

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Which of the following steel making process is being adopted at Rourkela Steel Plant?

Bessemer process

Open-hearth process

Electric process

L-D process

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18-4-1 high speed steel contains

vanadium 4%, chromium 18% and tungsten 1%

vanadium 1%, chromium 4% and tungsten 18%

vanadium 18%, chromium 1% and tungsten 4%

none of the above