Top 350+ Solved Engineering Materials MCQ Questions Answer

From 91 to 105 of 417

Q. The ability of a material to absorb energy in the plastic range is known as

a. Fatigue strength

b. Resilience

c. Toughness

d. Hardness

e. Creep

  • c. Toughness

Q. Sorbite' is obtained when

a. Quenching steel during transformation

b. Steel is annealed

c. A fully hardened steel is finally 'drawn' at about 677?C

d. None of the above

e. Copper nickel and chromium

  • b. Steel is annealed

Q. Selenium is an

a. intrinsic semi-conductor

b. extrinsic semi-conductor

c. p-type semi-conductor

d. n-type semi-conductor

e. None of the above

  • a. intrinsic semi-conductor

Q. In ferromagnetic materials

a. the atmic magnetic moments are anti-parallel and unequal

b. the atomic magnetic moments are parallel

c. the constituent is iron only

d. one of the constituent is iron

e. None of the above

  • b. the atomic magnetic moments are parallel

Q. Machining properties of steel are improved by adding

a. Chromium

b. Lead

c. Nickel

d. Silicon

e. Cobalt

  • b. Lead

Q. In compression, a prism of brittle material will break

a. Into large number of pieces

b. By forming a bulge

c. By shearing slong oblique plane

d. In a direction along the direction of load

e. None of the above

  • c. By shearing slong oblique plane

Q. Monel metal consists of

a. At which change of allotropic form takes place.

b. Aluminium copper and nickel

c. Zinc, copper and lead

d. Zinc nickel and copper

e. Nickel, lead and tin

  • b. Aluminium copper and nickel

Q. Cadmium sulphide cell is a

a. Photo conductive cell

b. Solar cell

c. Thermocouple

d. Photovoltaic cell

e. Photo emissive cell

  • a. Photo conductive cell

Q. Which process is different from the others

a. Drop forging

b. Cold extruding

c. Sand blasting

d. Short peening

e. Cold heading

  • a. Drop forging

Q. By alloying copper with manganese which of the following increases?

a. Specific gravity

b. Tensile strength

c. Melting point

d. Electrical conductivity

e. None of the above

  • b. Tensile strength

Q. The limitations of electroforming are

a. Cost is high

b. Production rate is generally very low

c. Recesses can be easily formed

d. (A) and (B) above

e. (A) and (C) above

  • d. (A) and (B) above

Q. Which of the following is the lightest?

a. Neutron

b. Molecule

c. Atom

d. Electron

e. Proton

  • d. Electron

Q. Cold shortness is

a. Too much shrinkage of materials at low temperatures

b. Uneven shrinkage of materials at low temperatures

c. Brittleness of material at low temperature

d. The region where Hooke's law does not hold good

e. None of the above

  • d. The region where Hooke's law does not hold good

Q. The process of shaping thin metals by pressing it against form while it is rotating is known as

a. Pressing

b. Extruding

c. Bending

d. Metal spinning

e. Trimming

  • d. Metal spinning

Q. Stress concentration occurs when

a. A body is subjected to excessive stress

b. A body is subjected to reversing stress

c. A body is subjected to non-uniform stress distribution

d. A body is subjected to fluctuating stress

e. A body is subjected to unidirectional stress

  • c. A body is subjected to non-uniform stress distribution
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