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4

Seam welding is a

A. Continuous spot welding process

B. Multi-spot welding process

C. Arc welding process

D. Process used for joining round bars

Correct Answer :

A. Continuous spot welding process


Related Questions

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4

In a ________, two or more operations are performed simultaneously at the single stroke of the ram.

A. Simple die

B. Progressive die

C. Combination die

D. Compound die

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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

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 oxygen cylinder is usually painted with

A. Black colour

B. White colour

C. Maroon colour

D. Yellow colour

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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

The hot working of metals is carried out

A. At the recrystallisation temperature

B. Below the recrystallisation temperature

C. Above the recrystallisation temperature

D. At any temperature

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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

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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4

In electric resistance welding, pressure applied varies from

A. 1 to 5 MPa

B. 5 to 10 MPa

C. 10 to 25 MPa

D. 25 to 55 MPa

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4

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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4

When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

A. Die casting method

B. Slush casting method

C. Permanent mould casting method

D. Centrifugal casting method

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4

The welding process used to join the ends of two pipes of uniform cross-section, is

A. Spot welding

B. Seam welding

C. Projection welding

D. Upset butt welding

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4

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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4

Blanking and piercing operations can be performed simultaneously in a

A. Simple die

B. Progressive die

C. Compound die

D. Combination die

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4

A two high rolling mill consists of two rolls which rotate

A. At the same speed and in the same direction

B. At the same speed but in opposite direction

C. At different speeds and in the same direction

D. At different speeds and in the opposite direction

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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

The cold working of metals is carried out

A. At the recrystallisation temperature

B. Below the recrystallisation temperature

C. Above the recrystallisation temperature

D. At any temperature

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4

For gas welding, the pressure desired at the welding torch for acetylene is

A. 7 to 103 kN/m²

B. 70 to 280 kN/m²

C. 280 to 560 kN/m²

D. 560 to 840 kN/m²

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4

The consumable electrode is used in

A. Carbon arc welding

B. Submerged arc welding

C. TIG arc welding

D. MIG arc welding

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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

Lap joints are employed on plates having thickness

A. Less than 3 mm

B. 5 to 10 mm

C. 12.5 mm

D. Above 25 mm

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4

Which one of the following material will require the largest size of riser for the same size of casting?

A. Aluminium

B. Cast iron

C. Steel

D. Copper

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4

The purpose of a riser is to

A. Deliver molten metal into the mould cavity

B. Act as a reservoir for the molten metal

C. Feed the molten metal to the casting in order to compensate for the shrinkage

D. Deliver the molten metal from pouring basin to gate

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4

In ________ welding, the weld may be made either from left to right or from right to left.

A. Forehand

B. Backhand

C. Vertical

D. None of these

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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

An oxidising process used for aluminium and magnesium articles is called

A. Galvanising

B. Anodising

C. Parkerising

D. Sherardizing

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4

When the file is moved to and fro over the work, it is known as

A. Cross filing

B. Draw filing

C. Pull and push filing

D. None of these

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4

In forehand welding, the weld is made

A. From left to right

B. From right to left

C. First from left to right and then from right to left

D. Either from left to right or from right to left

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4

The parts of circular cross-section which are symmetrical about the axis of rotation are made by

A. Hot forging

B. Hot spinning

C. Hot extrusion

D. Hot drawing

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4

Cast iron and steel pipes are produced by

A. Slush casting

B. Investment casting

C. True centrifugal casting

D. Die casting