High carbon steel carries carbon %age c_________________?

Related Mcqs:

1. The percentage of carbon in low carbon steel is__________________?

   A. 0.05%
   B. 0.15%
   C. 0.3%
   D. 0.5%
   E. 0.7%.

2. The ultimate tensile strength of low carbon steel by working at a high strain rate will_________________?

   A. decrease
   B. increase
   C. remain constant
   D. first increase and then decrease
   E. first decrease and then increase

3. Carbon steel is_______________?

   A. made by adding carbon in steel
   B. refined from cast iron
   C. an alloy of iron and carbon with varying quantities of phosphorus and sulphur
   D. extensively used for making cutting tools
   E. extremely brittle

4. Cold rolled steel sheets contain carbon of the following order___________________?

   A. 0.1%
   B. 0.2%
   C. 0.4%
   D. 0.6%
   E. 0.8%

5. Tungsten in high speed steel provides________________?

   A. hot hardness
   B. toughness
   C. wear resistance
   D. sharp cutting edge
   E. cold hardness

6. High carbon content in diesel oil used for diesel engine leads to_________________?

   A. production of highly corrosive gases corroding the cylinder walls and exhaust system
   B. excessive engine wear
   C. damaging of both the storage tank and the engine
   D. deposition on engine parts
   E. none of the above.

7. Which of the following solid fuel has high carbon content?

   A. Coke
   B. Coal
   C. Peat
   D. None of these

   Submitted by: Faheem Zaman Dhaunroo

8. Isothermal compression efficiency, even when running at high speed, can be approached by using A. multi-stage compression B. cold water spray C. both A. and B. above D. fully insulating the cylinder E. high stroke_________________?

   Isothermal compression efficiency, even when running at high speed, can be approached by using
   A. multi-stage compression
   B. cold water spray
   C. both A. and B. above
   D. fully insulating the cylinder
   E. high stroke

9. In malleable iron, carbon is present in the form of___________________?

   A. cementite
   B. free carbon
   C. flakes
   D. spheroids
   E. nodular aggregates of graphite

10. In mottled cast iron, carbon is available in__________________?

    A. free form
    B. combined form
    C. nodular form
    D. flat form
    E. partly in free and partly in combined state