Engineering Materials MCQs with answers Page - 4

Here, you will find a collection of MCQ questions on Engineering Materials. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which variety of copper has the best mechanical strength?

  • (A) Annealed copper
  • (B) Hard drawn copper
  • (C) Cast copper
  • (D) Soft copper

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Q. Brinell hardness number for nitrided steel is in the range

  • (A) 60 to 80
  • (B) 100 to 150
  • (C) 300 to 450
  • (D) 700 to 800

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Q. Diamagnetic materials are

  • (A) Only slightly magnetised
  • (B) Strongly magnetised
  • (C) Magnetised with eddy currents only
  • (D) Magnetised in a direction opposite to that of the applied field

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Q. Gamma iron has

  • (A) Body centred space lattice structure containing 6 atoms
  • (B) Body centred space lattice structure containing 10 atoms
  • (C) Face centred space lattice structure with 8 atoms
  • (D) Face centred space lattice structure with 14 atoms

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Q. Silicon steel is widely used in

  • (A) Chemical industry
  • (B) For cutting tools
  • (C) Electrical industry
  • (D) For making leaf prings

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Q. The tendency for brittle fracture increases with

  • (A) Increasing temperature
  • (B) Decreasing strain rate
  • (C) Appreciable plastic deformation before fracture
  • (D) None of the above

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Q. Preheating of material to be welded is necessary in case of

  • (A) Non-ferrous materials
  • (B) Cast iron
  • (C) Stainless steel
  • (D) Carbon steel

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Q. Steel balls for ball bearings are generally made of

  • (A) Carbon chrome steel
  • (B) Stainless steel
  • (C) Cast steel
  • (D) Nodular cast iron

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Q. The process of reheating the hardened steel to some temperature below the critical range, followed by any rate of cooling is known as

  • (A) Spheroidising
  • (B) Normalising
  • (C) Tempering
  • (D) Annealing

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Q. Delta iron occurs at temperature in the range of

  • (A) Room temperature to 600?C
  • (B) 600?C to critical temperature
  • (C) Between 800?C and 1200?C
  • (D) Between 1400?C and 1530?C

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