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4

A pattern maker's shrinkage rule considers

A. All pattern allowances

B. Only shrinkage allowance

C. All materials to be cast

D. All materials of the pattern

Correct Answer :

B. Only shrinkage allowance


Related Questions

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4

During cold working process

A. Grain structure is distorted

B. Strength and hardness of metal increases

C. Close dimensional tolerance can be maintained

D. All of the above

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4

In die casting, machining allowance is

A. Small

B. Large

C. Very large

D. Not provided

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4

In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.

A. Same

B. Less

C. More

D. None of these

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4

When the dimension is expressed as 20 -0.025 ⁺⁰⁰³⁵, then the basic size is

A. 20 mm

B. 20.035 mm

C. 20.025 mm

D. 19.975 mm

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4

A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as

A. Shift

B. Sand wash

C. Swell

D. Scab

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4

In submerged arc welding, an arc is produced between a

A. Carbon electrode and the work

B. Metal electrode and the work

C. Bare metal electrode and the work

D. Two tungsten electrodes and the work

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4

Cutting and forming operations can be performed in a single operation in a

A. Simple die

B. Progressive die

C. Compound die

D. Combination die

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4

An oxidising process used for aluminium and magnesium articles is called

A. Galvanising

B. Anodising

C. Parkerising

D. Sherardizing

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4

For welding plates of thickness less than 5 mm, its edges

A. Do not require bevelling

B. Should be bevelled to a single-V or U-groove

C. Should have a double-V or U-groove on one side

D. Should have a double-V or U-groove on both sides

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4

The adhesiveness is the property of sand due to which

A. It evolves a great amount of steam and other gases

B. The sand grains stick together

C. It clings to the sides of a moulding box

D. None of these

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4

Which of the following statement is wrong?

A. The mortise gauge has two scribing pins

B. The gouges are chisels with a hollow shaped blade

C. An auger is a planing tool

D. All of these

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4

The property of sand due to which the sand grains stick together is called

A. Collapsibility

B. Permeability

C. Cohesiveness

D. Adhesiveness

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4

Acetylene gas is stored in cylinders in

A. Solid form

B. Gaseous form

C. Liquid form

D. Any one of these

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4

During hot working of metals

A. Porosity of the metal is largely eliminated

B. Grain structure of the metal is refined

C. Mechanical properties are improved due to refinement of grains

D. All of the above

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4

The metal patterns as compared to wooden patterns require less

A. Shrinkage allowance

B. Machining allowance

C. Draft allowance

D. Distortion allowance

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4

In TIG arc welding, the welding zone is shielded by an atmosphere of

A. Helium gas

B. Argon gas

C. Either (A) or (B)

D. None of these

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4

The temperature of oxy-hydrogen flame is _________ oxyacetylene flame.

A. Same as

B. Less than

C. More than

D. None of these

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4

The shrinkage allowance for cast iron pattern is

A. 10 mm/m

B. 16 mm/m

C. 20 mm/m

D. 26 mm/m

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4

The material which can be best cut with oxygen cutting process is

A. Mild steel

B. Brass

C. Copper

D. Aluminium

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4

Aluminium is the best material for making patterns because it is

A. Light in weight

B. Easy to work

C. Corrosion resistant

D. All of these

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4

The welding process used in joining mild steel shanks to high speed drills, is

A. Spot welding

B. Seam welding

C. Flash butt welding

D. Upset butt welding

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4

The fullers are used

A. For finishing flat surfaces

B. For necking down a piece of work

C. For punching a hole

D. To finish the punched hole

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4

When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.

A. Neutral

B. Oxidising

C. Carburising

D. None of these

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4

In a hot chamber die casting machine

A. Ferrous alloys with low melting temperature are casted

B. Ferrous alloys with high melting temperature are casted

C. Nonferrous alloys with low melting temperature are casted

D. Nonferrous alloys with high melting temperature are casted

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4

The temperature produced by oxy-hydrogen flame is about

A. 1800°C

B. 2100°C

C. 2400°C

D. 3200°C

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4

A casting defect which results in general enlargement of a casting is known as

A. Shift

B. Sand wash

C. Swell

D. Scab

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4

The metal is subjected to mechanical working for

A. Refining grain size

B. Reducing original block into desired shape

C. Controlling the direction of flow lines

D. All of these

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4

A ring gauge is used to

A. Check the diameter of shafts or studs

B. Test the accuracy of holes

C. Check the clearance between two mating surfaces

D. All of the above

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4

Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?

A. Drawing

B. Extrusion

C. Rolling

D. Extrusion and rolling

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4

A moving mandrel is used in

A. Wire drawing

B. Tube drawing

C. Metal cutting

D. Forging