Engineering Materials

Question: An eutectoid steel consists of
[A].

wholly pearlite

[B].

wholly austenite

[C].

pearlite and ferrite

[D].

pearlite and cementite

Answer: Option A

Explanation:

No answer description available for this question.

Question: A steel with 0.8% carbon and 100% pearlite is called
[A].

eutectoid steel

[B].

hypo-eutectoid steel

[C].

hyper-eutectoid steel

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Iron-carbon alloys containing carbon __________ 4.3% are known as hyper-eutectic cast irons.
[A].

equal to

[B].

less than

[C].

more than

Answer: Option C

Explanation:

No answer description available for this question.

Question: Iron-carbon alloys containing 4.3% carbon are known as hypo-eutectic cast irons.
[A].

Correct

[B].

Incorrect

Answer: Option B

Explanation:

No answer description available for this question.

Question: Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
[A].

eutectic cast irons

[B].

hypo-eutectic cast irons

[C].

hyper-eutectic cast irons

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: For a steel containing 0.8% carbon
[A].

there is no critical point

[B].

there is only one critical point

[C].

there are two critical points

[D].

there can be any number of critical points

Answer: Option B

Explanation:

No answer description available for this question.

Question: Delta-iron occurs between the temperature range of
[A].

400°C to 600°C

[B].

600°C to 900°C

[C].

900°C to 1400°C

[D].

1400°C to 1530°C

Answer: Option D

Explanation:

No answer description available for this question.

Question: Gamma-iron occurs between the temperature range of
[A].

400°C to 600°C

[B].

600°C to 900°C

[C].

900°C to 1400°C

[D].

1400°C to 1530°C

Answer: Option C

Explanation:

No answer description available for this question.

Question: A steel with carbon above 0.8% is known as hyper-eutectoid steel.
[A].

Agree

[B].

Disagree

Answer: Option A

Explanation:

No answer description available for this question.

Question: A steel with carbon __________ is known as hypo-eutectoid steel.
[A].

0.8%

[B].

below 0.8%

[C].

above 0.8%

Answer: Option B

Explanation:

No answer description available for this question.