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4

For turning small taper on long workpiece, the suitable method is

A. By a form tool

B. By setting over the tail stock

C. By a taper turning attachment

D. By swivelling the compound rest

Correct Answer :

B. By setting over the tail stock


Related Questions

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4

The cutting angle of a flat drill varies from

A. 3° to 8°

B. 20° to 30°

C. 60° to 90°

D. 90° to 120°

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4

In a planer

A. Tool is stationary and work reciprocates

B. Work is stationary and tool reciprocates

C. Tool moves over stationary work

D. Tool moves over reciprocating work

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4

What is the type of welding defect caused due to shrinkage during solidification and by weld stresses called?

A. Incomplete fusion

B. Lamellar tearing

C. Mismatch

D. Shrinkage void

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4

In electro discharge machining, tool is made of

A. Brass

B. Copper

C. Copper tungsten alloy

D. All of these

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4

The usual value of the helix angle of a drill is

A. 20°

B. 30°

C. 45°

D. 60°

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4

In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰⁰⁴⁰ mm mate with holes of size 25.000 -0.020⁺⁰⁰³⁰, the maximum interference (in microns) in the assembly is

A. 40

B. 30

C. 20

D. 10

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4

The operation of machining several surfaces of a workpiece simultaneously is called

A. Profile milling

B. Gang milling

C. Saw milling

D. Helical milling

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4

The top and sides of the table of a shaper usually have

A. L-type slots

B. T-type slots

C. I-type slots

D. Any one of these

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4

The average cutting speed for turning brass with a high speed steel tool is

A. 15 to 19 m/min

B. 25 to 31 m/min

C. 60 to 90 m/min

D. 90 to 120 m/min

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4

The abrasive recommended for grinding materials of low tensile strength is

A. Silicon carbide

B. Aluminium oxide

C. Sand stone

D. Diamond

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4

In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become

A. Half

B. Two times

C. Eight times

D. Sixteen times

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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

The cutting fluid mostly used for machining alloy steels is

A. Water

B. Soluble oil

C. Dry

D. Sulphurised mineral oil

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4

In order to prevent tool from rubbing the work _________ on tools are provided.

A. Rake angles

B. Relief angles

C. Face angles

D. None of these

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4

An open structure of a grinding wheel is used for

A. Soft materials

B. Tough materials

C. Ductile materials

D. All of these

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4

In gear hobbing

A. Only hob rotates

B. Only gear blank rotates

C. Both hob and gear blank rotates

D. Neither hob nor gear blank rotates

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4

Which of the following statement is wrong about ultrasonic machining?

A. It is best suited for machining hard and brittle materials

B. It cuts materials at very slow speeds

C. It removes large amount of material

D. It produces good surface finish

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4

Stellite preserves hardness upto a temperature of

A. 350°C

B. 500°C

C. 900°C

D. 1100°C

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4

In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used is called.

A. Grinding

B. Lapping

C. Honing

D. Buffing

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4

Gear finishing operation is called

A. Shaping

B. Milling

C. Hobbing

D. Burnishing

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4

The facing is an operation of

A. Bevelling the extreme end of a workpiece

B. Embossing a diamond shaped pattern on the surface of a workpiece

C. Reducing the diameter of a workpiece over a very narrow surface

D. Machining the ends of a workpiece to produce a flat surface square with the axis

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4

An operation of embossing a diamond shaped pattern on the surface of a workpiece, is known as

A. Counter-boring

B. Grooving

C. Knurling

D. Facing

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4

The size of a shaper is given by

A. Stroke length

B. Motor power

C. Mass of machine

D. Rate size

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4

When the shear angle is large

A. Path of shear is short and chip is thin

B. Path of shear is large and chip is thick

C. Path of shear is short and chip is thick

D. Path of shear is large and chip is thin

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4

Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as

A. Cold shut

B. Swell

C. Sand wash

D. Scab

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4

Which of the following engineering materials is the most suitable candidate for hot chamber die casting?

A. Low carbon steel

B. Titanium

C. Copper

D. Tin

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4

The in-feed grinding is used to

A. Produce tapers

B. Grind shoulders and formed surfaces

C. Grind long, slender shafts or bars

D. All of these

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4

The grinding operation is a

A. Shaping operation

B. Forming operation

C. Surface finishing operation

D. Dressing operation

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4

High speed steel tools retain their hardness upto a temperature of

A. 250°C

B. 350°C

C. 500°C

D. 900°C

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4

A single point thread cutting tool should ideally hav

A. Zero rake angle

B. Positive rake angle

C. Negative rake angle

D. Point angle