Production Engineering

Question: In metal machining, the work-tool contact zone is a zone where heat is generated due to
[A].

plastic deformation of metal

[B].

burnishing friction

[C].

friction between the moving chip and the tool face

[D].

none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Question: In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called
[A].

friction zone

[B].

work-tool contact zone

[C].

shear zone

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called
[A].

friction zone

[B].

work-tool contact zone

[C].

shear zone

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: In metal cutting operations, chips are formed due to plastic deformation of the metal.
[A].

Agree

[B].

Disagree

Answer: Option A

Explanation:

No answer description available for this question.

Question: In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
[A].

high metal removal rate

[B].

dry machining

[C].

use of soft cutting tool

[D].

surface finish

Answer: Option D

Explanation:

No answer description available for this question.

Question: In metal cutting operations, the shear angle is the angle made by the shear plane with the
[A].

direction of the tool axis

[B].

direction of tool travel

[C].

perpendicular to the direction of the tool axis

[D].

central plane of the workpiece

Answer: Option B

Explanation:

No answer description available for this question.

Question: If the cutting speed is increased, then the built-up-edge
[A].

becomes longer

[B].

may or may not form

[C].

becomes smaller and finally does not form at all

[D].

has nothing to do with speed

Answer: Option C

Explanation:

No answer description available for this question.

Question: Mild steel during machining produces __________ chips.
[A].

continuous

[B].

discontinuous

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cast iron during machining produces
[A].

continuous chips

[B].

discontinuous chips

[C].

continuous chips with built-up-edge

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: In determining the various forces on the chip, Merchant assumed that the
[A].

cutting edge of the tool is sharp and it does not make any flank contact with the workpiece

[B].

only continuous chip without built-up-edge is produced

[C].

cutting velocity remains constant

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.