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This set of Engineering Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on Engineering Metallurgy Set 2
Q1 | In case of normalising heat treatment process hypereutectoid steels are heated above --------- temperature
- ac1
- ac3
- acm
- none of the above
Q2 | One of the following is a transformation product of austenite.
- austenite to ferrite
- austenite to ledeburite
- austenite to pearlite
- none of the above
Q3 | One of the following is a transformation product of austenite.
- austenite to ferrite
- austenite to ledeburite
- austenite to martensite
- none of the above
Q4 | One of the following is a transformation product of austenite.
- austenite to ferrite
- austenite to ledeburite
- austenite to carbide
- none of the above
Q5 | The Chemical formula for cementite is
- fe3c
- fec3
- fe2c3
- none of the above
Q6 | Following is one of the heat treatment process.
- melting
- solidification
- hardening
- none of the above
Q7 | One of the following is a heat treatment process for metals
- annealing
- normalising
- hardening
- all of the above
Q8 | From the following process,one is not a heat treatment process
- annealing
- normalising
- hardening
- machining
Q9 | One of the following is a transformation product of austenite.
- austenite to pearlite
- austenite to bainite
- austenite to martensite
- all of the above
Q10 | Pearlite is madeup of alternate colonies or lamilies of ---------and -------
- ferrite and martensite
- ferrite and pearlite
- ferrite and cementite
- none of the above
Q11 | transformation of austenite to bainite starts from nucleation of-------at austenitic grain boundary
- ferrite
- cementite
- pearlite
- none of the above
Q12 | Bainite phase is divided into two types-------and--------
- upper bainite and lower bainite
- large bainite and small bainite
- fast bainite and slow bainite
- none of the above
Q13 | Martensite phase is obtain by
- fast cooling or quenching
- slow cooling
- no cooling
- none of the above
Q14 | The isothermal transformation diagram i.e. TTT diagrams are --------
- total transformation time
- total temperature transformation
- time temperature transformation
- none of the above
Q15 | In the heat treatment cycle CCT means-------
- coolest cooling rate
- compared cooling rate
- critical cooling rate
- none of the above
Q16 | Heat treatment can be defined as
- heating the metal in a solid state and then cooling it in a different manner
- heating the metal to melting point nad then cool to room temperature
- both a and b
- none of the above
Q17 | One of the main purpose of heat treatment
- to improve ductility and strength
- to relieve internal stresses
- to improve machinability
- all of the above
Q18 | one of the following is heat treatment process for metal
- casting
- forging
- rolling
- none of the above
Q19 | one of the following is a purpose of anneling
- to soften the metal
- to relieve internal stresses
- to improve machinability
- all of the above
Q20 | In anneling process the metal from high temp is cooled very slowly in the furnace. This statement is -----
- true
- false
Q21 | one of the following cooling rate used for normalizing process
- furnace cooling
- water coolong
- air cooling
- none of the above
Q22 | Which heat treatment process is carried out after hardening process
- annealing
- normalising
- tempering
- none of the above
Q23 | one of the following is main purpose of Normalizing
- to improve machinability
- to modify and refine grain
- to homogenize the microstructure
- all of the above
Q24 | CCR is a minimum cooling rate of steel, by which we get 100% ------phase
- bainite
- pearlite
- austenite
- martensite
Q25 | One of the following is type of tempering heat treatment
- low temperature tempering
- high temperature tempering
- medium temperature tempering
- all of the above