Production Engineering MCQ

Production Engineering MCQ

01.Grey cast iron as compared to white cast iron is

Softer

02.Item, which best describes a CAM technology is

numerical control

03.Stress concentration occurs when a body is

subjected to

reverse stress

04.Face centered cubic space lattice is found in

aluminum, copper, lead, silver and nickel

05.Which of the following is a copper free alloy?

Invar

06.In steel as the percentage of carbon increases which of the following decreases?

Ductility

07.If steel is cooled in still air, the structure obtained is called

Sorbite

08.Percentage of tungsten in high speed steel is

Maximum

09.Maximum percentage of carbon in austenite is

2.1%

10.Process of reheating the hardened steel to some temperature below theoretical range, followed by any rate of cooling is called

Tempering

11.Coarse grained steels are

  

Less tough

12.Machining properties of steel are improved by adding

Sulphur, lead and phosphorus

13.A metal which is brittle in tension can become ductile

under hydrostatic compression

14.Cutting tools are manufactured by

High speed steel

15.Presence of Sulphur in pig iron makes it

casting unsound

16.For a ductile material, toughness is a measure of

Ability to absorb energy up to fracture

17.Ferrites are

Ferromagnetic

18.Heat treatment process used for casting is

Normalizing

19.Materials exhibiting time bound behavior are called

visco elastic

  

20.A phase transformation in which all the liquid phase transforms on cooling to two solid phases simultaneously, is called.

  

Eutectic

21.If low carbon steel is heated up to critical

temperature, the

Average grain size will be maximum

  

22.Wrought iron is

Not used for castings

23.Weld decay is the phenomenon found with

Stainless steel

24.Ability of a material to resist penetration by another material, is called

Hardness

25.An allotropic material has

Different crystal structures at different

Temperatures

26.Visco elastic behavior is common in

Nanocrystalline organic polymers

27.Silicon steel is widely used in

electrical industry

28.Which of the following constituents of steel is softest and least strong?

Ferrite

29.Aluminum alloy commonly used for utensils is

Hindalium

  

30. Ability of a material to retain the deformation permanently is called

Plasticity

31.If a material is heated, its toughness

Decreases

32.Bakelite is a

Phenol formaldehyde resin

33.NC contouring is an example of

continuous path positioning

34.Carbon steels is 

An alloy of iron and carbon with varying quantities of phosphorus and sulphur

35.Most ductile lattice is

Face centered cubic space lattice

  

36.If steel is quenched in water, the structure obtained is called

Martensite

37.Heat treatment process used to soften hardened steel is

Tempering

38.Moh’s scale is used in connection with

Hardness of materials

39.Phosphorus bronze has

High resistance to corrosion

40.An example of brass is

Muntz metal

41.Inconel is alloy containing

Nickel, chromium and iron

42.Vanadium when added to steel, it

Decreases tensile strength

43.Hardness steel depends upon amount of

Martensite

44.Metal with hexagonal close packed structure is

Magnesium

45.Corrosion resistance of steel is increased by adding

Nickel and chromium

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