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4

A process of removing metal by pushing or pulling a cutting tool is called

A. Up milling

B. Down milling

C. Forming

D. Broaching

Correct Answer :

D. Broaching


Related Questions

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4

The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is

A. 1.02

B. 1.32

C. 1.66

D. 1.82

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4

For generating a Coons surface we require

A. A set of grid points on the surface

B. A set of grid control points

C. Four bounding curves defining the surface

D. Two bounding curves and a set of grid control points

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4

A fine grained grinding wheel is used to grind

A. Hard and brittle materials

B. Soft and ductile materials

C. Hard and ductile materials

D. Soft and brittle materials

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4

The operation performed on a shaper is

A. Machining horizontal surface

B. Machining vertical surface

C. Machining angular surface

D. All of these

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4

Glazing in grinding wheels takes place when the

A. Wheel is too hard or wheel revolves at a very high speed

B. Wheel is too soft or wheel revolves at a very slow speed

C. Wheel is too hard and wheel revolves at very slow speed

D. Wheel is too soft and wheel revolves at a very high speed

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4

A right hand tool on a lathe cuts most efficiently when it travels

A. From left to right end of the lathe bed

B. From right to left end of the lathe bed

C. With the help of a compound slide

D. Across the bed

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4

Slow speed of the spindle is necessary in

A. Thread cutting

B. Turning a work of larger diameter

C. Turning a hard or tough material

D. All of these

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4

Glazing in grinding wheels __________ cutting capacity.

A. Has no effect on

B. Increase

C. Decrease

D. None of these

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4

The surface finish is improved by the increase in

A. Cutting speed

B. Nose radius

C. True rake angle

D. All of these

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4

The operation of making a cone-shaped enlargement of the end of a hole is known as

A. Counter-sinking

B. Counter-boring

C. Trepanning

D. Spot facing

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4

In ECM, the material removal is due to

A. Corrosion

B. Erosion

C. Fusion

D. Ion displacement

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4

Volume of a cube of side l and volume of a sphere of radius r are equal. Both the cube and the sphere are solid and of same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is

A. (4π/6)³ × (r/l)⁶

B. (4π/6) × (r/l)²

C. (4π/6)² × (r/l)³

D. (4π/6)² × (r/l)⁴

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4

The lip angle of a single point tool is usually

A. 20° to 40°

B. 40° to 60°

C. 60° to 80°

D. None of these

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4

Trepanning is an operation of

A. Making a cone-shaped enlargement of the end of a hole

B. Smoothing and squaring the surface around a hole

C. Sizing and finishing a small diameter hole

D. Producing a hole by removing metal along the circumference of a hollow cutting tool

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4

Misrun is a casting defect which occurs due to

A. Very high pouring temperature of the metal

B. Insufficient fluidity of the molten metal

C. Absorption of gases by the liquid metal

D. Improper alignment of the mould flasks

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4

The negative rake is usually provided on

A. High carbon steel tools

B. High speed steel tools

C. Cemented carbide tools

D. All of these

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4

The increase in depth of cut and feed rate __________ surface finish.

A. Improves

B. Deteriorates

C. Does not effect

D. None of these

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4

The specific cutting energy used for establishing the machinability of the metal depends upon its

A. Coefficient of friction

B. Microstructure

C. Work hardening characteristics

D. All of these

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4

A hole is of dimension φ = 9 ₊0⁺⁰⁰¹⁵ mm. The corresponding shaft is of dimension φ = 9 ₊0.001⁺⁰⁰¹⁰ mm. The resulting assembly has

A. Loose running fit

B. Close running fit

C. Transition fit

D. Interference fit

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4

The soft grade grinding wheels are denoted by the letters

A. A to H

B. I to P

C. Q to Z

D. A to P

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4

In the relation VTn = C, the value of n for ceramic tools is

A. 0.1 to 0.2

B. 0.20 to 0.25

C. 0.25 to 0.40

D. 0.40 to 0.55

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4

Which of the following operation is first performed?

A. Spot facing

B. Boring

C. Tapping

D. Drilling

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4

Friction at the tool-chip interface can be reduced by

A. Decreasing the rake angle

B. Increasing the depth of cut

C. Decreasing the cutting speed

D. Increasing the cutting speed

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4

Hardness of steel greatly improves with

A. Annealing

B. Cyaniding

C. Normalizing

D. Tempering

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4

Cold working of steel is defined as working

A. At its recrystallisation temperature

B. Above its recrystallisation temperature

C. Below its recrystallisation temperature

D. At two thirds of the melting temperature of the metal

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4

Which of the following statement is correct about EDM machining?

A. It can machine hardest materials.

B. It produces high degree of surface finish.

C. The tool and work are never in contact with each other.

D. All of these

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4

The cutting fluid mostly used for machining steel is

A. Water

B. Soluble oil

C. Dry

D. Heavy oils

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4

Drilling is an example of

A. Orthogonal cutting

B. Oblique cutting

C. Simple cutting

D. Uniform cutting

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4

Ceramic cutting tools are

A. Made by cold pressing of aluminium oxide powder

B. Available in the form of tips

C. Brittle and have low bending strength

D. All of these

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4

What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?

A. Thermit welding

B. Electroslag welding

C. Resistance welding

D. Submerged arc welding