Metal Cutting And Tool Materials - 3


30 Questions MCQ Test Topicwise Question Bank for GATE Mechanical Engineering | Metal Cutting And Tool Materials - 3


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This mock test of Metal Cutting And Tool Materials - 3 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 30 Multiple Choice Questions for Mechanical Engineering Metal Cutting And Tool Materials - 3 (mcq) to study with solutions a complete question bank. The solved questions answers in this Metal Cutting And Tool Materials - 3 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Metal Cutting And Tool Materials - 3 exercise for a better result in the exam. You can find other Metal Cutting And Tool Materials - 3 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

Which of the following forces are measured directly by strain gauges or force dynamometers during metal cutting?
1. Force exerted by the tool on the chip acting - normally to tool face.
2. Horizontal cutting force exerted by the tool on the workpiece.
3. Frictional resistance of the tool against the chip flow acting along the tool face.
4. Vertical force which helps in holding the tool in position.

Solution:
QUESTION: 2

The type of wear that occurs due to the cutting action of the particles in the cutting fluid is referred to as

Solution:
QUESTION: 3

Consider the following tool materials:
1. High speed steel
2. High carbon steel
3. Cemented carbides
4. Ceramics
Q. Negative rake angle is provided for

Solution:
QUESTION: 4

The coefficient of friction in metal cutting varies between

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QUESTION: 5

The main source of heat generation in metal cutting is

Solution:
QUESTION: 6

During machining, the wear land (h) has been plotted against machining time (T) as given in the following figure.

Q. For a critical wear land of 1.8 mm, the cutting tool life (in minute) is

Solution:
QUESTION: 7

Diamond cutting tools are not recommended for machining of ferrous metals due to

Solution:
QUESTION: 8

Inclination angle of a turning tool is measured on its

Solution:
QUESTION: 9

A cutting too! can never have its

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QUESTION: 10

Inconel and Haste alloy require cutting tools that are

Solution:
QUESTION: 11

High tungsten content in a carbide tool will

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QUESTION: 12

Tool signature is

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QUESTION: 13

Consider the following characteristics:
1. The cutting edge is normal to the cutting velocity.
2. The cutting forces occurs in two direction only.
3. The cutting edge is wider than the depth of cut.

The characteristics applicable to orthogonal cutting would include

Solution:


In orthogonal cutting, cutting face of the tool is 90° to the line of action or path of the tool.
Shop is confined mainly to such operations as knife turning, broaching and slotting the bulk of machining being done by oblique cutting.

QUESTION: 14

In oblique cutting of metals, the cutting edge of tool is

Solution:


If the cutting face is inclined at an angle less than 90° to the path of the tool, the cutting action is known as oblique.

QUESTION: 15

The portion of tool on which cutting edge is formed is known as

Solution:

Shank is called man body of cutting tool in which cutting edge is formed.

QUESTION: 16

Tool signature in ASA system comprises of

Solution:

Tool signature consists of 6 angles and one nose radius hence 7 elements.

QUESTION: 17

Tool signature in ASA system, the nose radius is indicated in

Solution:
QUESTION: 18

Angle between the face and flank of the single point cutting tool is known as

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QUESTION: 19

The angle between the face of the tool and the plane parallel to the base of the cutting tool is called

Solution:

QUESTION: 20

The angle on which the strength of the tool depends is

Solution:

Higher the positive back rake angle, tool becomes weaker and tools having negative back rake angle are very strong.

QUESTION: 21

Shear angle is the angle between

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QUESTION: 22

A blind hole is better tapped with a tap having

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QUESTION: 23

Nose radius is expressed in

Solution:

Nose radius is expressed in mm.

QUESTION: 24

When machining a hard and brittle metal like cast iron, the type of chips produced is

Solution:

Discontinuous chips are formed when machining brittle material at iow speed.

QUESTION: 25

Single point thread cutting tool should ideally have

Solution:

Positive angles improve the cutting operation by reducing forces and temperatures; however, positive angles also produce a small included angle of tool tip.

QUESTION: 26

The function of chip-breaker in a cutting tool is

Solution:

A continuous type of chip is quite troublesome, they should be broken into comparatively small pieces for the ease of handling and to prevent it from becoming a work hazard, hence chip breakers are used to reduce the swarf into small pieces as they are formed.

QUESTION: 27

An ideal tool material is the one which

Solution:
QUESTION: 28

In metal cutting operation, the approximate ratio of heat distributed among chip, tool and work in that order is

Solution:

Maximum heat is carried away be chip, i.e., 80% of the total heat generated is carried away by the chip.

QUESTION: 29

Which of the following is the correct relationship between the shear angle φ, friction angle β and cutting rake angle α given by Merchant analysis is

Solution:
QUESTION: 30

Which of the following relationship between shear angle φ, friction angle β and cutting rake angle α is known as lee and shatter analysis

Solution:

Lee and shaffer analysis is given by