Phosphor bronze contains____________________?

Related Mcqs:

1. Steel contains____________________?

   A. 80% or more iron B. 50% or more iron C. alloying elements like chromium, tungsten nickel and copper D. elements like phosphorus, sulphur and silicon in varying quantities E. high quantities of sulphur...

2. The hardness of steel increases if it contains____________________?

   A. austenite B. martensite C. pearlite D. cementite E. all of the above...

3. Dow metal contains____________________?

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

4. 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...

5. 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...

6. Aluminium bronze contains aluminium and copper in the ratio of___________________?

   A. 50 : 50 B. 40 : 60 C. 60 : 40 D. 10 : 90 E. 90 : 10...

7. Hardness of steel depends on_________________?

   A. amount of carbon it contains B. the shape and distribution of the car-bides in iron C. method of fabrication D. contents of alloying elements E. the quality of ore from which it is made...

8. Hardness of upper bainite (acicular structure) is about___________________?

   A. RC 65 B. RC 48 C. RC 57 D. RC 80 E. RC 32....

9. Drop forging dies contain carbon of the order of_________________?

   A. 0.1 to 0.2% B. 0.25 to 0.5% C. 0.6 to 0.7% D. 0.7 to 0.9% E. 1.0 to 1.2%....

10. Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element__________________?

    A. iron B. copper C. aluminium D. zinc E. nickel...