Mechanical Engineering

In metal machining, the work-tool contact zone is a zone where heat is generated due to

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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.

In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called

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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.

In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called

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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.

A petrol engine of a car develops 125 N-m torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is

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Question: A petrol engine of a car develops 125 N-m torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is
[A].

8.091 N-m

[B].

80.91 N-m

[C].

809.1 N-m

[D].

8091 N-m

Answer: Option C

Explanation:

No answer description available for this question.

In metal cutting operations, the shear angle is the angle made by the shear plane with the

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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.