Top 80+ Solved Engineering Metallurgy MCQ Questions Answer
Q. out of the following methods ,one is method used flame hardening process?
a. stationary method
b. circular and progressive method
c. spiral and progressive method
d. all of the above
Q. for induction hardening process,the heat source is a …..
a. induction coil carrying current
b. heating coil carrying current
c. metallic probes carrying current
d. none of the above
Q. one of the following is main disadvantage of flame hardeing process of nsurface hardeing?
a. possibility of over heating and grain growth
b. close control over case depth is not possible
c. mostly suitable or symmetri components only
d. all of the above
Q. Due to one of the reason given below,give rise to quench cracking?
a. improper quenching medium
b. improper selection of steel
c. improper design of component
d. all of the above
Q. the pearlitic microstructure which is obtain after patenting process is suitable to which manufacturing process
a. casting of cylindrical block
b. forging of cam shaft
c. drawing of wires
d. all of the above
Q. Identify following fig.
a. iron-carbon pha diagram
b. al-cu phase diagram
c. t.t.t. daigram
d. none of the above
Q. In case of Austempering, the quenching which is carried out, from high temp is known as
a. fast cooling
b. slow cooling
c. interrupted cooling
d. none of the above
Q. In Austempering process, the final phase that is obtain after complete heat treatment cycle
a. austenite
b. bainite
c. martensite
d. pearlite
Q. one of the following is main advantage of Austempering process
a. less distortion and cracking than martempering
b. no need of final tempering process
c. improvement in toughness
d. all of the above
Q. hardenability is nothing but……..
a. ability of metals to get high hardness
b. ability of metals to reduce brittleness
c. ability of metals to get through harden
d. none of the above
Q. hardenability of a metal or alloy is largely depend upon one of the following factor?
a. the carbon content of a steel
b. the alloy content of steel
c. quenchng medium
d. all of the above
Q. One of the following defect is aride dur to heat treatment process
a. quench crack
b. warping
c. soft spots
d. all of the above
Q. case hardening processes are those where……..
a. complete component is through harden
b. complte component is melted
c. only surface of the component ,whose hardness is incresed
d. all of the above