Are you guys looking for Mechanical Engineering MCQ Questions with Answers PDF Free Download as per Mechanical Engineering new exam pattern? You came to the right page. This may assist you to understand and check your knowledge about the Subjects. Students also can take a free test of the Multiple Choice Questions of Mechanical Engineering. Each question has four options followed by the right answer. These Mechanical Engineering MCQ Questions are selected supported by the newest exam pattern.
Q1. When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces
(A) White cast iron
(B) Nodular cast iron
(C) Malleable cast iron
(D) Alloy cast iron
Answer: (D) Alloy cast iron
Q2. Gamma iron exits at following temperature
(A) Room temperature
(B) Near melting point
(C) Between 1400°C and 1539°C
(D) Between 910°C and 1400°C
Answer: (D) Between 910°C and 1400°C
Q3. In malleable iron, carbon is present in the form of
(A) Cementite
(B) Free carbon
(C) Flakes
(D) Nodular aggregates of graphite
Answer: (D) Nodular aggregates of graphite
Q4. Monel metal is an alloy of
(A) Nickel and copper
(B) Nickel and chromium
(C) Nickel, Chromium and iron
(D) Copper and chromium
Answer: (A) Nickel and copper
Q5. Railway rails are normally made of
(A) Mild steel
(B) Alloy steel
(C) High carbon
(D) Tungsten steel
Answer: (C) High carbon
Q6. Blast furnace is used to produce
(A) Pig iron
(B) Cast iron
(C) Wrought iron
(D) Steel
Answer: (A) Pig iron
Q7. Weld decay is the phenomenon found with
(A) Cast iron
(B) Mild steel
(C) Nonferrous materials
(D) Stainless steel
Answer: (D) Stainless steel
Q8. High carbon steel carries carbon percentage
(A) 0.1 to 0.3%
(B) 0.3 to 0.6%
(C) 0.6 to 0.8%
(D) 0.8 to 1.5%
Answer: (D) 0.8 to 1.5%
Q9. Which of the following is used for bearing liner?
(A) Gun metal
(B) Bronze
(C) Bell metal
(D) Babbitt metal
Answer: (D) Babbitt metal
Q10. German silver contains
(A) 1% silver
(B) 2.5% silver
(C) 5% silver
(D) 10% silver
Answer: (C) 5% silver
Q11. Beryllium bronze contains
(A) 60% copper and 40% beryllium
(B) 80% copper and 20% beryllium
(C) 97.75% copper and 2.25% beryllium
(D) 99% copper and 1% beryllium
Answer: (C) 97.75% copper and 2.25% beryllium
Q12. Slow plastic deformation of metals under a constant stress is known as
(A) Creep
(B) Fatigue
(C) Endurance
(D) Plastic deformation
Answer: (A) Creep
Q13. In induction hardening __ is high.
(A) Current
(B) Voltage
(C) Frequency
(D) Temperature
Answer: (C) Frequency
Q14. The purpose of heat treatment is to
(A) Relieve the stresses set up in the material after hot or cold working
(B) Modify the structure of the material
(C) Change grain size
(D) Any one of these
Answer: (D) Any one of these
Q15. Carbon steel is
(A) Made by adding carbon in steel
(B) Refined from cast iron
(C) An alloy of iron and carbon with varying quantities of phosphorus and sulphur
(D) Extensively used for making cutting tools
Answer: (C) An alloy of iron and carbon with varying quantities of phosphorus and sulphur
Q16. The carbon in the pig iron varies from
(A) 0.1 to 0.5%
(B) 0.5 to 1%
(C) 1 to 5%
(D) 5 to 10%
Answer:(C) 1 to 5%
Q17. An engineer’s hammer is made of
(A) Cast iron
(B) Forged steel
(C) Mild steel
(D) High carbon steel
Answer: (D) High carbon steel
Q18. Hardness of upper bainite (acicular structure) is about
(A) RC 65
(B) RC 48
(C) RC 57
(D) RC 80
Answer: (B) RC 48
Q19. The hardness of steel increases if it contains
(A) Austenite
(B) Martensite
(C) Pearlite
(D) Cementite
Answer: (B) Martensite
Q20. Aluminium bronze contains aluminium and copper in the ratio of
(A) 50 : 50
(B) 40 : 60
(C) 60 : 40
(D) 10 : 90
Answer: (D) 10 : 90
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