Second Year WCS,Module 6-Heat Treatment

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NAME OF THE ITI *

MOBILE NUMBER *

1 : What are the various types of heat treatment processes? *

2 points

A : Annealing, Normalising, Hardening and Tempering

B : Normalising, Heating, Cooling and Painting

C : Hardening, Soaking, Painting and Packing

D : Tempering, Cooling, Packing and Solling

2 : What is the process of heat treatment? *

2 points

A : The process of heating and cooling to change the structure and properties

B : The process of heating to change the dimensions

C : The process of cooling to measure the dimensions

D : The process of heating and bending as per our requirement

3 : What are the various stages of heat treatment? *

2 points

A : Heating, Cooling and Quenching

B : Quenching, Cooling and Heating

C : Heating, Soaking and Quenching

D : Soaking, Quenching and Cooling

4 : What is the name of the structure formed,if a steel is heated for about 723°C? *

2 points

A : Cementide

B : Austenite

C : Martensite

D : Ferrite

5 : Which heat treatment process is done to refine the grain structure of the steel *

2 points

: Annealing

B : Normalising

C : Hardening

D : Tempering

6 : What is the name of heat treatment process done to relieve strain and stress? *

2 points

A : Normalising

B : Annealing

C : Hardening

D : Tempering

7 : Which process produce equilibrium conditions *

2 points

A : Annealing and Hardening

B : Normalising and Tempering

C : Annealing and Normalising

D : Normalising and Tempering

8 : Which process steel is heated in a carbonaceous atmosphere for the penetration of carbon? *

2 points

A : Case hardening

B : Nitriding

C : Carburising

D : Induction hardening

9 : Which is the suitable nitriding process for all alloyed and unalloyed steels? *

2 points

A : Silver nitriding

B : Nitriding in salt-bath

C : Nitriding in Quenching tank

D : Gas nitriding

10 : What is the name of the heat treatment process, where the metal is heated and quenched in water or oil? *

3 points

A : Hardening

B : Normalising and Tempering

C : Annealing

D : Tempering

11 : Which is a kind of surface hardening process? *

3 points

A : Cementide

B : Ferrite

C : Nitriding

D : Tempering

12 : How much time is allowed normally in soaking zone for a 10 mm thick metal piece while hardening? *

4 points

A : 5 minutes

B : 10 minutes

C : 15 minutes

D : 20 minutes

13 : What is colour of a metal piece when heated to 250°C while doing the tempering process? *

3 points

A : Blue

B : Brown

C : Purple

D : Pale

14 : What is the purpose of tempering a steel? *

2 points

A : To reduce the brittleness

B : To remove the ductility

C : To increase the hardness

D : To increase the brittleness

15 : Which one is heat insulator? *

2 points

A : Thermocole

B : Copper

C : Brass

D : Aluminium

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