Aluminium bronze contains aluminium and copper in the ratio of___________________?

Related Mcqs:

1. Aluminium bronze contains__________________?

   A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
   B. 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
   C. 10% aluminium and 90% copper
   D. 90% magnesium and 9% aluminium with some copper
   E. 10% aluminium and 90% tin

2. Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?

   A. 50 : 20 : 20 : 10
   B. 40 : 30 : 20 : 10
   C. 50 : 20 : 10 : 20
   D. 30 : 20 : 30 : 20
   E. 50 : 10 : 20 : 20

3. 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
   E. none of the above

4. Muntz metal contains copper and zinc in the ratio of________________?

   A. 50 : 50
   B. 40 : 60
   C. 60 : 40
   D. 20 : 80
   E. 80 : 20

5. Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio_________________?

   A. 50 : 50
   B. 30 : 70
   C. 70 : 30
   D. 40 : 60
   E. 60 : 40

6. 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
   E. 90% copper and 10% zinc

7. Phosphor bronze contains____________________?

   A. 0.5% of phosphorous
   B. 1% phosphorous
   C. 2.5% phosphorous
   D. 5% phosphorous
   E. none of the above

8. 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
   E. corrosion resistance is good

9. Addition of silicon 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
   E. none of the above

10. Addition of lead and bismuth 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
    E. none of the above