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. The ability of a material to resist softening at high temperature is known as
(A) Creep
(B) Hot tempering
(C) Hot hardness
(D) Fatigue
Answer: (C) Hot hardness
Q2. Which of the following is an amorphous material?
(A) Mica
(B) Silver
(C) Lead
(D) Glass
Answer: (D) Glass
Q3. Cast iron is characterized by minimum of following percentage of carbon
(A) 0.2%
(B) 0.8%
(C) 1.3%
(D) 2%
Answer: (D) 2%
Q4. The metal suitable for bearings subjected to light loads, is
(A) Silicon bronze
(B) White metal
(C) Monel metal
(D) Phosphor bronze
Answer: (D) Phosphor bronze
Q5. The material widely used for making pendulums of clocks is
(A) Stainless steel
(B) High speed steel
(C) Heat resisting steel
(D) Nickel steel
Answer:(D) Nickel steel
Q6. German silver is an alloy of
(A) Silver and some impurities
(B) Refined silver
(C) Nickel, Copper and zinc
(D) Nickel and copper
Answer: (C) Nickel, Copper and zinc
Q7. Induction hardening is the process of
(A) Hardening surface of work-piece to obtain hard and wear resistant surface
(B) Heating and cooling rapidly
(C) Increasing hardness throughout
(D) Inducing hardness by continuous process
Answer: (A) Hardening surface of work-piece to obtain hard and wear resistant surface
Q8. Manganese in steel increases its
(A) Tensile strength
(B) Hardness
(C) Ductility
(D) Fluidity
Answer: (A) Tensile strength
Q9. The alloying element which reduces the formation of iron sulphide in steel is
(A) Chromium
(B) Nickel
(C) Vanadium
(D) Manganese
Answer: (D) Manganese
Q10. Addition of copper to aluminium results in
(A) Improvement of casting characteristics
(B) Improvement of corrosion resistance
(C) One of the best known age and precipitation hardening systems
(D) Improving machinability
Answer: (C) One of the best known age and precipitation hardening systems
Q11. The transistor is made of
(A) Silver
(B) Gold
(C) Copper
(D) Germanium
Answer: (D) Germanium
Q12. Age hardening is related to
(A) Duralumin
(B) Brass
(C) Copper
(D) Silver
Answer: (A) Duralumin
Q13. The type of space lattice found in alpha-iron is
(A) Face centered cubic space lattice
(B) Body centered cubic space lattice
(C) Close packed hexagonal space lattice
(D) None of these
Answer: (B) Body centered cubic space lattice
Q14. The following types of materials are usually the most ductile
(A) Face centered cubic lattice
(B) Body centered cubic lattice
(C) Hexagonal close packed lattice
(D) All of the above
Answer: (A) Face centered cubic lattice
Q15. Grey cast iron has
(A) Carbon in the form of free graphite
(B) High tensile strength
(C) Low compressive strength
(D) All of these
Answer: (A) Carbon in the form of free graphite
Q16. Cast iron has
(A) High tensile strength
(B) Its elastic limit close to the ultimate breaking strength
(C) High ductility
(D) All of the above
Answer: (B) Its elastic limit close to the ultimate breaking strength
Q17. The most effective inhibitor of grain growth, when added in small quantities is
(A) Carbon
(B) Vanadium
(C) Manganese
(D) Cobalt
Answer: (B) Vanadium
Q18. Quenching is not necessary when hardening is done by
(A) Case hardening
(B) Flame hardening
(C) Nitriding
(D) Any one of these
Answer: (C) Nitriding
Q19. The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as
(A) Hysteresis
(B) Creep
(C) Visco elasticity
(D) Boeschinger effect
Answer: (D) Boeschinger effect
Q20. Tungsten in high speed steel provides
(A) Hot hardness
(B) Toughness
(C) Wear resistance
(D) Sharp cutting edge
Answer: (A) Hot hardness
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