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MCQ - TNPSC JTO

JTO - 436 - Fitter

436 - Unit VIII Metals Metal Non Metal

177)   

Normalizing is similar to annealing except that cooling is done in ______.

A.
B.
C.
D.
178)   

Normalizing produces a structure that is ______.

A.
B.
C.
D.
179)   

Hardening of steel is achieved by ______.

A.
B.
C.
D.
180)   

In hardening, rapid cooling of steel is called ______.

A.
B.
C.
D.
181)   

Martensite is formed in steel during ______.

A.
B.
C.
D.
182)   

Hardening makes steel ______.

A.
B.
C.
D.
183)   

Tempering is always carried out after ______.

A.
B.
C.
D.
184)   

The main purpose of tempering is to ______.

A.
B.
C.
D.
185)   

During tempering, the steel is reheated to ______.

A.
B.
C.
D.
186)   

Low temperature tempering of hardened steel increases ______.

A.
B.
C.
D.
187)   

High temperature tempering results in ______.

A.
B.
C.
D.
188)   

If hardened steel is not tempered, it will be ______.

A.
B.
C.
D.
189)   

The cooling medium used in hardening depends on ______.

A.
B.
C.
D.
190)   

In heat treatment, slow cooling of steel in furnace is known as ______.

A.
B.
C.
D.
191)   

The slowest cooling rate during heat treatment is obtained in ______.

A.
B.
C.
D.
192)   

The fastest cooling rate during quenching is obtained in ______.

A.
B.
C.
D.