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MCQs

Total Questions : 1535 | Page 1 of 154 pages
Question 1. Nodular iron has
  1.     High machinability
  2.     Low melting point
  3.     High tensile strength
  4.     All of the above
 Discuss Question
Answer: Option D. ->  All of the above
Explanation :
Question 2. The metal suitable for bearings subjected to heavy loads, is
  1.     Silicon bronze
  2.     White metal
  3.     Monel metal
  4.     Phosphor bronze
 Discuss Question
Answer: Option B. ->  White metal
Explanation :
Question 3. The presence of sulphur in pig iron makes
  1.     It easily machinable
  2.     It brittle
  3.     It hard
  4.     The casting unsound
 Discuss Question
Answer: Option D. ->  The casting unsound
Explanation :
Question 4. Tungsten in high speed steel provides
  1.     Hot hardness
  2.     Toughness
  3.     Wear resistance
  4.     Sharp cutting edge
 Discuss Question
Answer: Option A. ->  Hot hardness
Explanation :
Question 5. Brass is an alloy of
  1.     Copper and zinc
  2.     Copper and tin
  3.     Copper, tin and zinc
  4.     None of these
 Discuss Question
Answer: Option A. ->  Copper and zinc
Explanation :
Question 6. The property of a material due to which it breaks with little permanent distortion, is called
  1.     Brittleness
  2.     Ductility
  3.     Malleability
  4.     Plasticity
 Discuss Question
Answer: Option A. ->  Brittleness
Explanation :
Question 7. Nickel when added to copper improves
  1.     Machinability
  2.     Hardness
  3.     Hardness and strength
  4.     Strength and ductility
 Discuss Question
Answer: Option B. ->  Hardness
Explanation :
Question 8. The hardness is the property of a material due to which it
  1.     Can be drawn into wires
  2.     Breaks with little permanent distortion
  3.     Can cut another metal
  4.     Can be rolled or hammered into thin sheets
 Discuss Question
Answer: Option C. ->  Can cut another metal
Explanation :
Question 9. When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.
  1.     Equal to
  2.     Less than
  3.     More than
  4.     None of these
 Discuss Question
Answer: Option B. ->  Less than
Explanation :
Question 10. Induction hardening is the process of
  1.     Hardening surface of work-piece to obtain hard and wear resistant surface
  2.     Heating and cooling rapidly
  3.     Increasing hardness throughout
  4.     Inducing hardness by continuous process
 Discuss Question
Answer: Option A. ->  Hardening surface of work-piece to obtain hard and wear resistant surface
Explanation :

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