Mechanical Engineering Archives -

Crater wear occurs mainly on the

September 25, 2022 by admin

Question: Crater wear occurs mainly on the
[A].

nose part, front relief face and side relief face of the cutting tool

[B].

face of the cutting tool at a short distance from the cutting edge only

[C].

cutting edge only

[D].

front face only

Answer: Option B

Explanation:

No answer description available for this question.

Negative rakes are used for

September 21, 2022 by admin

Question: Negative rakes are used for
[A].

carbide tools

[B].

heavy loads

[C].

harder materials

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

In order to remove internal stresses produced by hardening the steel, the process usually adopted is

September 21, 2022 by admin

Question: In order to remove internal stresses produced by hardening the steel, the process usually adopted is
[A].

tempering

[B].

annealing

[C].

normalising

[D].

spheroidising

Answer: Option A

Explanation:

No answer description available for this question.

For hardening alloy steels and high speed steels, they are heated to

September 21, 2022 by admin

Question: For hardening alloy steels and high speed steels, they are heated to
[A].

500 to 600°C

[B].

700 to 900°C

[C].

1100 to 1300°C

[D].

1300 to 1500°C

Answer: Option C

Explanation:

No answer description available for this question.

A steel containing more than 0.8% carbon is known as eutectoid steel.

September 20, 2022 by admin

Question: A steel containing more than 0.8% carbon is known as eutectoid steel.
[A].

Yes

[B].

Answer: Option B

Explanation:

No answer description available for this question.

A steel containing __________ 0.8% carbon is known as hypo-eutectoid steel.

September 19, 2022 by admin

Question: A steel containing __________ 0.8% carbon is known as hypo-eutectoid steel.
[A].

equal to

[B].

less than

[C].

greater than

Answer: Option B

Explanation:

No answer description available for this question.

Larger than 15° side cutting edge angle

September 19, 2022 by admin

Question: Larger than 15° side cutting edge angle
[A].

increases tool life

[B].

decreases tool life

[C].

produces chipping and decreases tool life

[D].

results in excessive stress concentration and greater heat generation

Answer: Option C

Explanation:

No answer description available for this question.

A steel containing 0.8% carbon is known as

September 19, 2022 by admin

Question: A steel containing 0.8% carbon is known as
[A].

eutectoid steel

[B].

hyper-eutectoid steel

[C].

hypo-eutectqid steel

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

The ball bearings are, usually, made from

September 14, 2022 by admin

Question: The ball bearings are, usually, made from
[A].

low carbon steel

[B].

high carbon steel

[C].

medium carbon steel

[D].

high speed steel

Answer: Option C

Explanation:

No answer description available for this question.

According to Indian standard specifications, a plain carbon steel designated by 40C8 contains carbon

September 14, 2022 by admin

Question: According to Indian standard specifications, a plain carbon steel designated by 40C8 contains carbon
[A].

0.20 to 0.40%

[B].

0.35 to 0.45%

[C].

0.40 to 0.60%

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.