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4

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

A. Rake angle

B. Cutting angle

C. Clearance angle

D. Lip angle

Correct Answer :

A. Rake angle


Related Questions

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4

When the shear angle is small

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

Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles on and 2 cycles off Power supply is at 50 Hz. Calculate R.P.M. and energy requirement of the above circular electrodes assuming effective resistance between electrodes as 100 ohm.

A. 2.17 rpm, 600 joules

B. 6.8 rpm, 6 joules

C. 5.03 rpm, 600 joules

D. 22 rpm, 600 joules

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4

Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance to be 200 μm and current flow time of 0.2 second, heat generated during the process will be

A. 0.2 Joule

B. 1 Joule

C. 5 Joule

D. 1000 Joule

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4

Any number of equal divisions can be obtained on milling machine by

A. Direct indexing

B. Simple indexing

C. Compound indexing

D. Differential indexing

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4

Which of the following statement is correct regarding grinding of high carbon steel?

A. Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.

B. Aluminium oxide wheels are employed.

C. The grinding wheel has to be of open structure.

D. All of the above

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4

In Oxyacetylene gas welding, temperature at the inner cone of the flame is around

A. 3500⁰C

B. 3200⁰C

C. 2900⁰C

D. 2550⁰C

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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

Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)

A. AW, LC and M

B. AW, D, LC and M

C. D, LC, P and SW

D. D, LC, and SW

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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

Crater wear leads to

A. Increase in cutting temperature

B. Weakening of tool

C. Friction and cutting forces

D. All of these

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4

A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25mm. The percentage change in diameter is

A. 0

B. 2.07

C. 20.7

D. 41.4

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4

The lead screw of a lathe has _________ threads.

A. Single start

B. Double start

C. Multi-start

D. Any one of these

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4

For turning internal tapers, 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

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4

If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?

A. Forehand welding

B. Flux cored ARC welding

C. Electro slag welding

D. Pulsed spray welding

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4

A dense structure of a grinding wheel is used for

A. Hard materials

B. Brittle materials

C. Finishing cuts

D. All of these

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4

In ultrasonic machining, tool is made of

A. Tungsten carbide

B. Brass or copper

C. Diamond

D. Stainless steel

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4

The maximum production of small and slender parts is done by

A. Watch maker's lathe

B. Sliding head stock automatic lathe

C. Multi-spindle automatic lathe

D. Capstan lathe

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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

A tool used to withdraw a drill from the sleeve is called

A. Drill remover

B. Drill puller

C. Drift

D. Drill drawer

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4

It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If the spindle speed is 60 r.p.m., then the speed of lead screw will be

A. 10 r.p.m.

B. 20 r.p.m.

C. 120 r.p.m.

D. 180 r.p.m.

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4

In which of the following machine, the work remains stationary and the tool is rotated?

A. Vertical boring machine

B. Horizontal boring machine

C. Precision boring machine

D. Jig boring machine

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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

Hard and tough materials like cast iron should be turned at

A. Slow speed

B. High speed

C. Any speed

D. Certain specific speed

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4

In a plain milling machine, the table can be moved

A. Longitudinally

B. Crosswise

C. Vertically

D. All of these

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4

In which of the following machine, the work is usually rotated while the drill is fed into work?

A. Sensitive drilling machine

B. Radial drilling machine

C. Gang drilling machine

D. Deep hole drilling machine

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4

In which of the following machine, the work rotates and the tool is stationary?

A. Vertical boring machine

B. Horizontal boring machine

C. Precision boring machine

D. Jig boring machine

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4

In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to

A. Circular interpolation in counter clockwise direction and incremental dimension

B. Circular interpolation in counter clockwise direction and absolute dimension

C. Circular interpolation in clockwise direction and incremental dimension

D. Circular interpolation in clockwise direction and absolute dimension

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4

In hot machining, the work is heated by

A. Simple heating

B. Flame heating

C. Induction heating

D. Any one of these

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4

Hardness of green sand mould increases with

A. Increase in moisture content beyond 6 percent

B. Increase in permeability

C. Decrease in permeability

D. Increase in both moisture content and permeability

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4

Fixtures are used

A. For holding and guiding the tool in drilling, reaming or tapping operations

B. For holding the work in milling, grinding, planing or turning operations

C. To check the accuracy of workpiece

D. None of the above