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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

Correct Answer :

B. Gang milling


Related Questions

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4

In hot machining, tool is made of

A. Tungsten carbide

B. Brass or copper

C. Diamond

D. Stainless steel

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4

Which of the following operations can be performed with milling cutters?

A. Cutting key ways on shafts

B. Cutting external screw threads

C. Cutting teeth of spur gears

D. All of these

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4

A push broach as compared to pull broach

A. Has less number of teeth

B. Is short and stocky

C. Removes less material for each pass of the tool

D. All of the above

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4

Lapping 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

Side relief angle of a single point tool is the angle

A. By which the face of the tool is inclined towards back

B. By which the face of the tool is inclined sideways

C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool

D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base

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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

The factor which affects the tool life is

A. Tool geometry

B. Cutting speed

C. Feed rate

D. All of these

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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

The primary purpose of a sprue in a casting mould is to

A. Feed the casting at a rate consistent with the rate of solidification.

B. Act as a reservoir for molten metal

C. Feed molten metal from the pouring basin to the gate

D. Help feed the casting until all solidification takes place

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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 width of cutting edge of a parting off tool varies from

A. 3 to 12 mm

B. 5 to 20 mm

C. 8 to 30 mm

D. 15 to 40 mm

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4

Larger end cutting edge angle _________ tool life.

A. Increases

B. Decreases

C. Does not effect

D. None of these

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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

Surface grinding is done to produce

A. Tapered surface

B. Flat surface

C. Internal cylindrical holes

D. All of these

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4

The strength of a brazed joint

A. Decreases with increase in gap between the two joining surfaces

B. Increases with increase in gap between the two joining surfaces

C. Decreases up to certain gap between the two joining surfaces beyond which it increases

D. Increases up to certain gap between the two joining surfaces beyond which it decreases

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4

Match the following metal forming processes with their associated stresses in the work piece.
Metal forming processTypes of stress
1. CoiningP. Tensile
2. Wire DrawingQ. Shear
3. BlankingR. Tensile and compressive
4. Deep DrawingS. Compressive

A. 1-S, 2-P, 3-Q, 4-R

B. 1-S, 2-P, 3-R, 4-Q

C. 1-P, 2-Q, 3-S, 4-R

D. 1-P, 2-R, 3-Q, 4-S

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4

If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is

A. 0.20

B. 0.30

C. 0.50

D. 0.60

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4

The cutting tool in a milling machine is mounted on

A. Spindle

B. Arbor

C. Column

D. Knee

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4

In metal cutting, use of low feeds and high cutting speeds is desired when the objective is

A. High metal removal rate

B. Dry machining

C. Use of soft cutting tool

D. Surface finish

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4

Ultrasonic machining is best suited for

A. Tool steels

B. Sintered carbides

C. Glass

D. All of these

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4

The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.

A. Mild steel

B. Copper

C. Aluminium

D. Brass

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4

High speed steel drills can be operated at about _________ the speed of high carbon steel drills.

A. One-half

B. One-fourth

C. Double

D. Four times

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4

A diamond locating pin is used in jigs and fixtures because

A. Diamond is very hard and wear resistant

B. It occupies very little space

C. It helps in assembly with tolerance on centre distance

D. It has a long life

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4

The silicon carbide abrasive is chiefly used for grinding

A. Cemented carbide

B. Ceramic

C. Cast iron

D. All of these

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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

The point angle of a drill, for drilling stainless steel, is

A. 90°

B. 118°

C. 135°

D. 150°

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4

In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to minimum when the tooth leaves the work.

A. Up milling

B. Down milling

C. Face milling

D. End milling

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4

Segmental chips are formed during machining

A. Mild steel

B. Cast iron

C. High speed steel

D. High carbon steel

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4

The type of reamer used for reaming operation in a blind hole, is

A. Straight fluted reamer

B. Left hand spiral fluted reamer

C. Right hand spiral fluted reamer

D. Any one of these

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4

What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?

A. Porosity

B. Undercut

C. Under fill

D. Crack