Addition of manganese 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

Which of the following alloys does not have copper as one of the constituents________________?

A. Delta metal
B. Monel metal
C. Constantan
D. Nichrome

Which is false statement about properties of aluminium ___________________?

A. Modulus of elasticity is fairly low
B. Wear resistance is very good
C. Fatigue strength is not high
D. Creep strength limits its use to fairly low temperatures

Admiralty gun metal contains__________________?

A. 63 to 67% nickel and 30% copper
B. 88% copper, 10% tin and rest zinc
C. Alloy of tin, lead and cadmium
D. Iron scrap and zinc

Permalloy is a___________________?

A. kind of stainless steel
B. none ferrous alloy
C. polymer
D. cutting tool material

Free cutting steels_____________________?

A. Are used where ease in machining is the criterion
B. Contain carbon in free form
C. Require least cutting force
D. Do not exist

The alloy used for making electrical resistances and heating elements is____________________?

A. Nichrome
B. Invar
C. Magnin
D. Elinvar

Gun metal contains__________________?

A. 70% copper and 30% zinc
B. 90% copper and 10% tin
C. 85-92% copper and rest tin with little lead and nickel
D. 70-78% copper and rest tin

Bronze contains_____________________?

A. 70% copper and 30% zinc
B. 90% copper and 10% tin
C. 85-92% copper and rest tin with little lead and nickel
D. 70-75% copper and rest tin

Structural steel contains following principal alloying elements__________________?

A. Nickel, chromium and manganese
B. Tungsten, molybdenum and phosphorous
C. Lead, tin, aluminium
D. Zinc, sulphur, and chromium