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4

According to Indian standard specifications, 100 H6/g 5 means that.

A. Basic size is 100 mm

B. Actual size is 100 mm

C. Difference between the actual size and basic size is 100 mm

D. None of the above

Correct Answer :

A. Basic size is 100 mm


Related Questions

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Metal patterns are used for

A. Small castings

B. Large castings

C. Complicated castings

D. Large scale production of castings

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Which of the following statement is wrong?

A. The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting alloys.

B. The cold chamber die casting machine is used for casting aluminium, magnesium, copper base alloys and other high melting alloys.

C. The castings produced by centrifugal casting method have open and coarse grained structure.

D. All of the above

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4

Which of the following welding process uses non-consumable electrodes?

A. TIG welding

B. MIG welding

C. Manual arc welding

D. Submerged arc welding

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4

A diamond pointed chisel is used for cutting

A. Flat surfaces

B. Grooves

C. Keyways

D. V-shaped grooves

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The casting method adopted for ornaments and toys of nonferrous alloys, is

A. Permanent mould casting

B. Slush casting

C. Die casting

D. Centrifugal casting

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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

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 cold chisels are made by

A. Drawing

B. Rolling

C. Piercing

D. Forging

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4

The teeth of hacksaw blade are bent

A. Towards right

B. Towards left

C. Alternately towards right and left and every third or fourth left straight

D. May be bent in any direction

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4

A neutral flame is obtained by supplying

A. Equal volumes of oxygen and acetylene

B. More volume of oxygen and less volume of acetylene

C. More volume of acetylene and less volume of oxygen

D. None of the above

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4

In a simple die

A. Two or more operations are performed simultaneously at the single stroke of the ram

B. Two or more cutting operations are performed at one station of the press in every stroke of the ram

C. Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram

D. None of the above

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4

The property of sand due to which it evolves a great amount of steam and other gases is called

A. Collapsibility

B. Permeability

C. Cohesiveness

D. Adhesiveness

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4

A gimlet is a ________ tool.

A. Boring

B. Marking

C. Cutting

D. None of these

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4

In electric resistance welding, voltage required for heating is

A. 1 to 5 volts

B. 6 to 10 volts

C. 11 to 20 volts

D. 50 to 100 volts

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The punch and die set up is ________ for punching and piercing operation.

A. Same

B. Similar

C. Different

D. None of these

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In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to

A. d

B. 1.5d

C. 3d

D. 6d

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The operation of cutting a sheet of metal in a straight line along the length, is known as

A. Plunging

B. Notching

C. Slitting

D. Forming

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4.Linde welding uses

A. Neutral flame and rightward technique

B. Oxidising flame and leftward technique

C. Neutral flame and leftward technique

D. Carburising flame and rightward technique

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4

A hacksaw blade is specified by its

A. Length

B. Material

C. Width

D. Number of teeth

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4

The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as

A. Drawing

B. Squeezing

C. Coining

D. Planishing

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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

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

Seam welding is best adopted for metal thickness ranging from

A. 0.025 to 3 mm

B. 3 to 5 mm

C. 5 to 8 mm

D. 8 to 10 mm

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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

Scribing block is used to

A. Hold the round bars during marking

B. Check the trueness of flat surfaces

C. Locate the centres of round bars

D. Check the surface roughness

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In spot welding, the spacing between two spot weld should not be less than

A. d

B. 1.5 d

C. 3 d

D. 6 d

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During drawing operation, the states of stress in cup would include

A. Compressive stress in the flange

B. Tensile stress in the wall

C. Both (A) and (B)

D. None of these

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4

To prevent the body of the blade from jamming in the saw cut, the teeth of blade are

A. Strengthened

B. Sharpened

C. Set

D. All of these

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4

In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.

A. Sand slinger

B. Squeezing machine

C. Jolt machine

D. Stripper plate machine

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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