The hardenability of steel decreases with__________________?

Related Mcqs:

1. _____________________ of austenite decreases the hardenability in steel ?

   A. Fine grains
   B. Coarse grains
   C. Homogeneity
   D. Dissolved elements (except cobalt)

2. Maximum hardenability of steel depends upon its_______________________?

   A. Chemical composition
   B. Carbon content
   C. Grain size
   D. Alloying elements content

3. High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from _______________ percent ?

   A. 5 to 10
   B. 15 to 25
   C. 45 to 50
   D. 75 to 80

4. Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of _______________ gms of zinc per m2 of steel strip ?

   A. 5-10
   B. 1000-1500
   C. 120-500
   D. 1500-3000

5. The usual energy consumption in electric arc furnace steel making is _____________ KWh/ton of steel ?

   A. 60 – 100
   B. 400 – 700
   C. 1200 -1500
   D. 2000 – 2300

6. Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?

   A. Hot rolled mild
   B. Cold rolled mild
   C. Forged
   D. Machinable stainless

7. Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?

   A. Wrought
   B. Tool
   C. Alloy
   D. Plain carbon

8. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?

   A. Tensile strength
   B. Compressive strength
   C. Young’s modulus
   D. Thermal co-efficient of expansion

9. The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?

   A. Carbon
   B. Manganese
   C. Both A nor B
   D. Neither A nor B

10. With increase in steam pressure, its specific volume decreases ____________________?

    A. Rapidly first and then slowly
    B. Linearly
    C. Slowly first and then rapidly
    D. Exponentially