A. Tempering
B. Annealing
C. Normalising
D. Carburising
Related Mcqs:
- The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is___________________?
A. Full annealing
B. Bright annealing
C. Patenting
D. None of these - _________________ is not a heat treatment process ?
A. Cyaniding
B. Parkerizing
C. Austempering
D. Martempering - The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by_________________?
A. T1/(T1-T2)
B. T2/(T1-T2)
C. T1/T2
D. T2/T1 - Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part ?
A. Anodising
B. Tempering
C. Carburising
D. Annealing - Stresses encountered in the metal forming processes are less than the _____________ of the material?
A. Fracture strength
B. Yield strength
C. Elastic limit
D. Limit of proportionality - Rankine cycle comprises of two isothermal and two ___________________ processes?
A. Isobaric
B. Polytropic
C. Isentropic
D. None of these - Sub zero treatment of steel is done to____________________?
A. Suppress martensite transformation
B. Enhance its working performance in sub zero atmosphere
C. Reduce the retained austenite in hardened steel
D. Induce temper brittleness after its hardening - The minimum carbon content in steel should be ____________________ percent for it to respond to a hardening treatment ?
A. 0.2
B. 0.4
C. 0.6
D. 0.8 - ____________________ are normally subjected to sub-zero treatment?
A. Highly stressed parts
B. Gauges or precision parts
C. Cold rolled sheets
D. Non machinable materials - In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?
A. Zirconia
B. Alumina
C. Bakelite
D. Tungsten carbide
