Mechanical Engineering

Question: Manganese is added in low carbon steel to
[A].

make the steel tougher and harder

[B].

raise the yield point

[C].

make the steel ductile and of good bending qualities

[D].

all of the above

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following steel making process is being adopted at Rourkela Steel Plant?
[A].

Bessemer process

[B].

Open-hearth process

[C].

Electric process

[D].

L-D process

Answer: Option D

Explanation:

No answer description available for this question.

Question: Duplex process of steel making is a combination of
[A].

basic bessemer and acid open hearth processes

[B].

acid bessemer and basic open hearth processes

[C].

acid bessemer and acid open hearth processes

[D].

basic bessemer and basic open hearth processes

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following process of steel making is in operation at Tata Iron and Steel Works, Jamshedpur?
[A].

Bessemer process

[B].

Open hearth process

[C].

Duplex process

[D].

Electric process

Answer: Option C

Explanation:

No answer description available for this question.

Question: In basic bessemer process, the furnace is lined with
[A].

silica bricks

[B].

a mixture of tar and burnt dolomite bricks

[C].

either (a) or (b)

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: In acidic bessemer process, the furnace is lined with
[A].

silica bricks

[B].

a mixture of tar and burnt dolomite bricks

[C].

either (a) or (b)

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: During the operation of a bessemer converter, the white flame indicates that the silicon and managenese had burnt and carbon has started oxidising.
[A].

Agree

[B].

Disagree

Answer: Option A

Explanation:

No answer description available for this question.

Question: The brown smoke during the operation of a bessemer Converter indicates that the
[A].

air is burning out silicon and managanese

[B].

silicon and manganese has burnt and carbon has started oxidising

[C].

the converter must be titled to remove the contents of the converter

[D].

the brown smoke does not occur during the operation of a bessemer converter

Answer: Option A

Explanation:

No answer description available for this question.

Question: According to Indian standard specifications, a plain carbon steel designated by 40 C8 means that the carbon content is
[A].

0.04%

[B].

0.35 to 0.45%

[C].

0.4 to 0.6%

[D].

0.6 to 0.8%

Answer: Option B

Explanation:

No answer description available for this question.

Question: Wrought iron
[A].

is a ductile material

[B].

can be easily forged or welded

[C].

cannot stand sudden and excessive shocks

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.