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4

Dielectric is used in

A. Electrochemical machining

B. Ultrasonic machining

C. Electro discharge machining

D. Laser machining

Correct Answer :

C. Electro discharge machining


Related Questions

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A jig is defined as a device which

A. Holds and locates a workpiece and guides and controls one or more cutting tools

B. Holds and locates a workpiece during an inspection or for a manufacturing operation

C. Is used to check the accuracy of workpiece

D. All of the above

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4

In a metal arc welding process, metal transfer across the arc may take place by a method of material transfer where the metal transfers across the arc is in larger drops. This is at the rate of 100 drops / sec or less, what is this known as

A. Globular transfer

B. Spray transfer

C. GMAW practice

D. Dip transfer

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4

In centre less grinders, the maximum angular adjustment of the regulating wheel is

A.

B. 10°

C. 15°

D. 20°

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The method of grinding used to produce a straight or tapered surface on a workpiece, is

A. Internal cylindrical grinding

B. Form grinding

C. External cylindrical grinding

D. Surface grinding

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4

The grooving 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. Enlarging the end of a hole cylindrically

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4

The rake angle of a single point cutting tool corresponds to _________ of a twist drill.

A. Lip clearance angle

B. Helix angle

C. Point angle

D. Chisel edge angle

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4

Discontinuous chips are formed during machining of

A. Brittle metals

B. Ductile metals

C. Hard metals

D. Soft metals

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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

The drill spindles are provided with standard taper known as

A. Morse taper

B. Seller's taper

C. Chapman taper

D. Brown and Sharpe taper

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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 purpose of jigs and fixtures is to

A. Increase machining accuracy

B. Facilitate interchangeability

C. Decrease expenditure on quality control

D. All of these

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4

The type of tool used on milling machine and broaching machine is

A. Single point cutting tool

B. Two point cutting tool

C. Three point cutting tool

D. Multipoint cutting tool

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4

The lathe centres are provided with standard taper known as

A. Morse taper

B. Seller's taper

C. Chapman taper

D. Brown and Sharpe taper

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4

The broaching operation in which the work moves past the stationary tool is called

A. Pull broaching

B. Push broaching

C. Surface broaching

D. Continuous broaching

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It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?

A. Sensitive drilling machine

B. Radial drilling machine

C. Gang drilling machine

D. Multiple spindle drilling machine

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4

In centreless grinders, the regulating wheel is inclined at

A. 0° to 8°

B. 9° to 15°

C. 16° to 20°

D. 21° to 25°

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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

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4

The type of tool used on lathe, shaper and planer is

A. Single point cutting tool

B. Two point cutting tool

C. Three point cutting tool

D. Multipoint cutting tool

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4

Quality screw threads are produced by

A. Thread milling

B. Thread chasing

C. Thread cutting with single point tool

D. Thread casting

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4

What is the name of the device used in arc welding circuits for the purpose of modifying the rate of current change when the weld road is varied rapidly?

A. Reactor

B. Kerf

C. Inductor

D. Cone

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4

The process of improving the cutting action of the grinding wheel is called

A. Truing

B. Dressing

C. Facing

D. Clearing

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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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Gear finishing operation is called

A. Shaping

B. Milling

C. Hobbing

D. Burnishing

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4

Crack in grinding wheel is developed due to

A. High temperature developed at the contact of the wheel face and work

B. Grinding hard work

C. Low speed of wheel

D. High speed of wheel

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4

The height of each tooth of a broach is

A. Same throughout

B. In progressively decreasing order

C. In progressively increasing order

D. None of these

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The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called

A. Profile milling

B. Gang milling

C. Saw milling

D. Helical milling

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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

A feed gear box for a screw cutting lathe is designed on the basis of

A. Geometric progression

B. Arithmetic progression

C. Harmonic progression

D. None of these

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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

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Surface grinding is done to produce

A. Tapered surface

B. Flat surface

C. Internal cylindrical holes

D. All of these