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The cold chisels are made from

A. Cast iron

B. Mild steel

C. High speed steel

D. Cast tool steel

Correct Answer :

D. Cast tool steel


Related Questions

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In shielded arc welding

A. Large electrode is used

B. Welding rod coated with slag is used

C. Welding rod coated with fluxing material is used

D. None of the above

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Piercing is an operation of cutting

A. A cylindrical hole in a sheet of metal by the punch and the die

B. A hole (other than cylindrical) in a sheet of metal by the punch and the die

C. A flat sheet to the desired shape

D. A number of holes evenly spaced in a regular pattern on a sheet of metal

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The current in electric resistance welding can be regulated by

A. Varying the input supply

B. Changing the primary turns of the transformer

C. Changing the secondary turns of the transformer

D. Any one of the above

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The advantage of Thermit welding is that

A. All parts of the weld section are molten at the same time

B. Weld cools almost uniformly

C. Results in a minimum problem with internal residual stresses

D. All of the above

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The maximum flame temperature occurs

A. At the outer cone

B. At the inner cone

C. Between the outer and inner cone

D. At the torch tip

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The operation of straightening a curved sheet metal, is known as

A. Drawing

B. Squeezing

C. Coining

D. Planishing

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The mode of deformation of the metal during spinning is

A. Bending

B. Stretching

C. Rolling and stretching

D. Bending and stretching

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The increase in hardness due to cold working, is called

A. Age hardening

B. Work hardening

C. Induction hardening

D. Flame hardening

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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

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When the dimension is expressed as, then the tolerance is

A. 0.035 mm

B. 0.025 mm

C. 0.01 mm

D. 0.06 mm

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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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Galvanising is a

A. Zinc diffusion process

B. Process of coating zinc by hot dipping

C. Process used for making thin phosphate coating on steel

D. None of the above

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In welding magnesium with TIG arc welding, direct current with _________ is used.

A. Straight polarity

B. Reversed polarity

C. Both (A) and (B)

D. None of these

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In order to deliver molten metal from pouring basin to gate, a ________ is used.

A. Riser

B. Sprue

C. Core

D. None of these

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A file removes the metal during

A. Forward stroke

B. Return stroke

C. Both forward and return strokes

D. None of these

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When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.

A. Horizontal core

B. Vertical core

C. Drop core

D. Balanced core

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Lancing is the operation of

A. Cutting a sheet of metal in a straight line along the length

B. Removal of metal to the desired shape from the edge of a plate

C. Cutting a sheet of metal through part of its length and then bending the cut portion

D. Bending a sheet of metal along a curved axis

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The operation of bending a sheet of metal along a curved axis, is known as

A. Plunging

B. Notching

C. Slitting

D. Forming

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A rip saw

A. Is a two man saw

B. Is used for cutting along the grains of wood

C. Has a narrow blade with two wooden handles

D. All of the above

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The tolerance produced by shell moulding process of casting is

A. +0.05 mm

B. ±0.2 mm

C. +0.5 mm

D. ±1 mm

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The difference between the upper limit and lower limit of a dimension is called

A. Nominal size

B. Basic size

C. Actual size

D. Tolerance

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The recrystallisation temperature of steel is

A. 400°C

B. 600°C

C. 800°C

D. None of these

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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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The centrifugal casting method, is used for casting articles of

A. Symmetrical shape about vertical axis

B. Symmetrical shape about horizontal axis

C. Irregular shape

D. Nonferrous metal only

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When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by

A. Washing it with water

B. Rubbing on wood

C. Washing it with dilute acid

D. Using file card

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The surface to be machined is marked on the pattern by

A. Red colour

B. Yellow colour

C. Black colour

D. Blue colour

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During hot working of metals

A. Poor surface finish is produced

B. Scale is formed on the metal surface

C. Close tolerances cannot be maintained

D. All of these

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The upsetting is a process of

A. Increasing the cross-section of a bar

B. Reducing the cross-section of a bar

C. Joining the two surfaces of metal under pressure after heating

D. Bending of a bar

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The brass and bronze are welded by _________ flame.

A. Neutral

B. Oxidising

C. Carburising

D. All of these

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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