A. Improve machinability & tensile strength
B. Remove internal stresses
C. Refine the structure
D. Remove strains caused by cold working
Related Mcqs:
- Normalising does not ______________________ of a metal ?
A. Improve machinability & tensile strength
B. Remove internal stresses
C. Refine the structure
D. Remove strains caused by cold working - Filler material used in welding should have _________________ as compared to the parent metal to be welded ?
A. Lower melting temperature
B. Same melting temperature
C. Same composition
D. Both ‘B’ & ‘C’ - Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails ?
A. Below the yield point
B. Above the yield point
C. Below the elastic limit
D. At the elastic limit - Joining of thin foils is preferred to be done by _____________________?
A. Gamma rays
B. X-rays
C. Microwaves
D. Gas welding - Secondary hardening in steels arises out of the _____________________?
A. Precipitation of fine alloy carbides at high temperatures
B. Refinement of ferrite grain size by working
C. Decomposition of retained austenite upon heat treatment
D. Precipitation of complex inter-metallic upon heat treatment - For organic compounds, group contribution method can be used for the estimation of _____________________?
A. Critical properties
B. Specific gravity
C. Specific volume
D. Thermal conductivity - Any substance above its critical temperature exists as _____________________?
A. Saturated vapour
B. Solid
C. Gas
D. Liquid - Isentropic process means a constant _____________________ process ?
A. Enthalpy
B. Pressure
C. Entropy
D. None of these - With increase in temperature, the surface tension of water _____________________?
A. Increases
B. Decreases
C. Remain constant
D. Increases linearly - With increase in the solute concentration, the specific heat of aqueous solutions _____________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Either A. or B.; depends on the type of solution
