Austenite rs a combination of_________________?

Related Mcqs:

1. Maximum percentage of carbon in austenite is______________?

   A. 0.025%
   B. 0.26%
   C. 0.8%
   D. 1.25%
   E. 1.7%.

2. Pearlite is a combination of___________________?

   A. ferrite and cementite
   B. cementite and gamma iron
   C. ferrite and austenite
   D. ferrite and iron graphite
   E. pearlite and ferrite

3. For manometer, a better liquid combination is one having ___________________?

   A. higher surface tension
   B. lower surface tension
   C. surface tension is no criterion
   D. high density and viscosity
   E. low density and viscosity

4. Annealing of white cast iron results in production of_________________?

   A. malleable iron
   B. nodular iron
   C. spheroidal iron
   D. grey iron
   E. none of the above

5. Depth of hardness of steel is increased by addition of_________________?

   A. nickel
   B. chromium
   C. tungsten
   D. vanadium
   E. ell of the above

6. Super conduction by metals is observed in the temperature range of_________________?

   A. below 10°K
   B. above 100°K
   C. around 0°C
   D. around 100°C
   E. above 1000°C

7. Connecting rod is usually made of_________________?

   A. aluminium
   B. low carbon steel
   C. medium carbon steel
   D. high carbon steel
   E. cast iron

8. Balls for ball bearings are made of_________________?

   A. cast iron
   B. mild steel
   C. stainless steel
   D. carbon-chrome steel
   E. high carbon steel

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. Foundry crucible is made of_________________?

    A. mild steel
    B. german silver
    C. lead
    D. cast iron
    E. graphite