AME 1 Q2

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Question: What is an alloy and why are they used?

A. An alloy is a pure metal with enhanced properties. Alloys are used to improve the conductivity of metals.

C. An alloy is a compound formed from the reaction of metals. Alloys are used to reduce the cost of metals.

D. An alloy is a natural occurrence of mixed metals. Alloys are used for aesthetic purposes only.

B. An alloy is a mixture of two or more metals or a metal and other elements. Alloys are used to create materials with specific properties not found in pure metals.

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Question: What is stainless steel and what are its two main constituents and their approximate percentages?

B. Stainless steel is a copper alloy containing at least 15% zinc and 5% tin.

D. Stainless steel is a titanium alloy containing at least 12% vanadium and 8% molybdenum.

A. Stainless steel is an iron alloy containing at least 10% chromium and 8% nickel.

C. Stainless steel is an aluminum alloy containing at least 20% magnesium and 10% silicon.

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Question: Which of the following are common alloying elements used in steel production?

A. Carbon, silicon, manganese, chromium, nickel, and molybdenum.

D. Sodium, potassium, calcium, magnesium, barium, and strontium.

C. Oxygen, hydrogen, nitrogen, helium, argon, and neon.

B. Copper, zinc, tin, lead, aluminum, and iron.

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Question: How do the mechanical properties of steel change with increasing carbon content?

A. Strength and ductility increase proportionally with carbon content.

B. Strength increases while ductility decreases with increasing carbon content.

C. Ductility increases while strength decreases with increasing carbon content.

D. There is no significant change in mechanical properties with increasing carbon content.

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