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Engineering
Mechanical
ME Set-1
Engineering Materials
143

Engineering Materials MCQ with Answers

143) Which of the following statement is wrong?

The spheroidising process is usually applied to high carbon tool steels which are difficult to machine

In spheroidising process, the cementite in the granular form is produced in the structure of steel

The annealing process causes complete crecrystallisation in steels which have been severely cold worked and a new grain structure is formed

none of the above

Answer is:

none of the above

Engineering Materials MCQ with Answers

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144) In the austempering process of heat treatment, austenite changes into

martensite

troostite

sorbite

bainite

Answer is:

bainite

145) The heat treatment process used for castings is

carburizing

normalizing

annealing

tempering

Answer is:

normalizing

The heat treatment process used for castings is

146) the heat treatment process used for softening hardened steel is

carburizing

normalizing

annealing

tempering

Answer is:

tempering

Explanation:

Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys

147) In Induction hardening ______ Is high.

current

voltage

frequency

temperature

Answer is:

frequency

Engineering Materials MCQ with Answers

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143) Which of the following statement is wrong?

none of the above

Engineering Materials MCQ with Answers

Related Engineering Materials MCQ with Answers

144) In the austempering process of heat treatment, austenite changes into

bainite

145) The heat treatment process used for castings is

normalizing

146) the heat treatment process used for softening hardened steel is

tempering

147) In Induction hardening ______ Is high.

frequency

Engineering Materials MCQ with Answers