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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

Correct Answer :

D. Dip transfer


Related Questions

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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

Crater wear is mainly due to the phenomenon known as

A. Adhesion of metals

B. Oxidation of metals

C. Diffusion of metals

D. All of these

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4

Tumbler gears in lathe are used to

A. Reduce the spindle speed

B. Cut gears

C. Give desired direction of movement to the lathe carriage

D. Drill a workpiece

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4

A taper tap has

A. Its end tapered for about three or four threads

B. Its end tapered for about eight or ten threads

C. Full threads for the whole of its length

D. None of the above

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4

A left 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

A lathe with four steps on the cone pulley and with back-gears will have

A. Four direct speeds

B. Four indirect speeds

C. Four direct and four indirect speeds

D. Eight indirect speeds

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4

Allowance in limits and fits refers to

A. Maximum clearance between shaft and hole

B. Minimum clearance between shaft and hole

C. Difference between maximum and minimum sizes of hole

D. Difference between maximum and minimum sizes of shaft

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4

The enlarging of an existing circular hole with a rotating single point tool is called

A. Boring

B. Drilling

C. Reaming

D. Internal turning

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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

Which of the following engineering materials is the most suitable candidate for hot chamber die casting?

A. Low carbon steel

B. Titanium

C. Copper

D. Tin

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4

Gear lapping is an operation

A. After heat treatment

B. Prior to heat treatment

C. For gear reconditioning

D. None of these

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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

In which type of welding a gas shield, a consumable electrode is used and the welding can be done in all positions.

A. ARC welding

B. Submerged ARC welding

C. TIG welding

D. MIG welding

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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 hot machining, tool is made of

A. Tungsten carbide

B. Brass or copper

C. Diamond

D. Stainless steel

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4

The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)

A. VnT = C

B. VTn = C

C. Vn/T = C

D. V/Tn = C

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4

Which one of the following is a solid state joining process?

A. Gas tungsten arc welding

B. Resistance spot welding

C. Friction welding

D. Submerged arc welding

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4

If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as

A. ARC

B. Short ARC

C. ARC length

D. ARC blow

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4

The tool life in case of a grinding wheel is the time

A. Between two successive regrinds of the wheel

B. Taken for the wheel to be balanced

C. Taken between two successive wheel dressings

D. Taken for a wear of 1 mm on its diameter

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4

In an interchangeable assembly, shafts of size 25.000 -0.0100⁺⁰⁰⁴⁰ mm mate with holes of size 25.000 -0.010⁺⁰⁰²⁰ mm. The maximum possible clearance in the assembly will be

A. 10 microns

B. 20 microns

C. 30 microns

D. 60 microns

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4

The cutting speed for drilling copper with high speed steel drills varies from

A. 10 to 20 m/min

B. 18 to 30 m/min

C. 24 to 45 m/min

D. 60 to 90 m/min

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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

Which of the following operation is first performed?

A. Spot facing

B. Boring

C. Tapping

D. Drilling

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Tool signature consists of __________ elements.

A. Two

B. Four

C. Five

D. Seven

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The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece, is called

A. Up milling

B. Down milling

C. Face milling

D. End milling

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4

In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is

A. Cylindrical grinder

B. Internal grinder

C. Surface grinder

D. Tool and cutter grinder

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4

In drilling Bakelite and fibrous plastics, the point angle of a drill is

A. 90°

B. 118°

C. 135°

D. 150°

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4

Broaching is applied for machining

A. Internal and external surfaces

B. Round or irregular shaped holes

C. External flat and contoured surfaces

D. All of these

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4

A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is

A. 0.2 mm

B. 10 mm

C. 20 mm

D. 100 mm

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4

In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate

A. Increases continuously

B. Decreases continuously

C. Decreases, becomes stable and then increases.

D. Increases, becomes stable and then decreases.