A. stainless steel
B. gun metal
C. german silver
D. duralumin
E. cast iron
Related Mcqs:
- Which is false statement about case hardening. Case hardening is done by_______________?
A. electroplating
B. cyaniding
C. induction hardening
D. nitriding
E. flame hardening - Induction hardening is the process of_____________________?
A. hardening surface of workpiece to ob-tain hard and wear resistant surface
B. heating and cooling rapidly
C. increasing hardness throughout
D. inducing hardness by continuous process
E. hardening core - Cast iron is characterised by minimum of following %age of carbon_________________?
A. 0.2%
B. 0.8%
C. 1.3%
D. 2%
E. 6.3%. - High carbon steel carries carbon %age c_________________?
A. 0.1 to 0.3%
B. 0.3 to 0.6%
C. 0.6 to 0.8%
D. 0.8 to 1.5%
E. 1.5 to 2.5%. - In the case of compression ignition engine, the %age of CO in exhaust gases is________________?
A. Zero
B. 5-10%
C. Depends on load
D. Considerable percent - The crystal of alpha iron is ____________________?
A. body centred cubic
B. face centred cubic
C. hexagonal close packed
D. cubic structure
E. orthorhombic crystal - Process of austempering results in__________________?
A. formation of bainite structure
B. carburised structure
C. martenistic structure
D. lamellar layers of carbide distributed throughout the structure
E. relieving of stresses throughout a component - Railway rails are normally made of_______________?
A. mild steel
B. alloy steel
C. high carbon
D. tungsten steel
E. cast iron steel - 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 - Which of the following is not the correct method of increasing fatigue limit __________________?
A. shot peening
B. nitriding of surface
C. cold working
D. surface decarburisation
E. under-stressing
