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MAN PRO > Quiz 2 > Flashcards

Quiz 2 Flashcards

1
Q

Metal forming is possible on metals and alloys which are—-
A) Brittle B) Ductile C) Malleable D) Both B & C

A

Both B & C

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2
Q

By hot rolling of an ingot, a square cross section area produced above 225 Cm2 is
called A) Billet B) Bloom C) Sheet D) Plate

A

Bloom

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2
Q

A slab refers to a hot rolled ingot with a cross sectional area greater than —
A) 100 Cm2 B) 225 Cm2 C) 16 Cm2 D) 150 Cm2

A

100 Cm2

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3
Q

A rolled product having thickness less than 6 mm is called.
A) Plate B) Slab C) Sheet D) Billet

A

Sheet

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4
Q

Metal forming processes are —— deformation processes
A) Elastic B) Plastic C) Bulk D) Combination

A

Plastic

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5
Q

A rolled product having thickness less than 6 mm and width less than 300 mm is
A) Sheet B) Plate C) Slab D) Strip

A

Strip

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6
Q

Hot working processes are carried out at ——- temperatures.
A) Melting B) Room C) Above re-crystallization D) Below re-crystallization

A

Above re-crystallization

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7
Q

For metal alloys the re-crystallization temperature —- of melting temperatures.
A) 1/2 B) 1/3 C) 2/3 D) 3/4

A

1/2

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8
Q

For pure metals the re-crystallization temperature is —- of melting temperatures
A) 1/2 B) 1/3 C) 2/3 D) 3/2

A

1/3

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9
Q

If a metal is subjected to strain hardened, it’s re-crystallization temperature
A) Increases B) Decreases C) Remains same D) Not affected

A

Decreases

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10
Q

The re-crystallization temperature is room temperature for
A) Cast Iron B) Aluminium C) Copper D) Lead

A

Lead

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11
Q

The process in which tubes are produced without joint is
A) Deep drawing B) Spinning C) Seamless tubing D) Rolling

A

Seamless

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12
Q

It is possible to get ——- in Cold Working.
A) Better Surface finish B) Close Dimensions C) Hard parts D) All

A

All

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13
Q

Alluminium structural shapes are mostly produced in ——-
A) Rolling B) Extrusion C) Forging D) Spinning

A

Extrusion

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14
Q

Pre-heating of the tools is done in —— forming.
A) Hot B) Cold C) Isothermal D) All

A

Isothermal

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15
Q

Friction in metal forming processes causes ——
A) Defects B) Force increase C) Retarded work flow D) All

A

All

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16
Q

——— is tendency of the two surfaces in relative motion to adhere to each other
rather than slide.
A) Pasting B) Sticking C) Bonding D) Attaching

A

Sticking

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17
Q

Bulk deformation is possible in —— rolling process.
A) Hot B) Cold C) Both Hot & Cold D) Isothermal

A

Hot

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17
Q

The process widely used to produce structural shapes and rails in large quantities
from all metals.
A) Rolling B) Extrusion C) Forging D) Casting

A

Rolling

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18
Q

Ingot is converted into Blooms and Billets by ——— process.
A) Forging B) Extrusion C) Rolling D) All

A

Rolling

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19
Q

Cold rolling of thin sheets of high strength metal is done with — rolling mill.
A) Two high B) Three high C) Four high D) Cluster

A

Cluster

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19
Q

To prevent fracture, the rolling sequence has to be interrupted for ——
A) Case Hardening B) Normalizing C) Annealing D) Peening

A

Annealing

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20
Q

In three high rolling mill, the middle roller is rotated by —–
A) Separate motor B) Friction C) Upper roller D) Lower roller

A

Friction

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21
Q

The rolling mill generally used for sheet rolling with less power is —–
A) Four high B) Three high C) Two high D) All

A

Four high

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22
Q

——- Rolling mill is called Tandem mill
A) Cluster B) Continuous C) Four high D) Three high

A

Continuous

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23
Q

The rolling mill used to reduce slabs to coiled hot rolled strips in a single pass —
A) Cluster B) Continuous C) Planetary D) Four high

A

Planetary

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24
Q

Beams, I – sections that require rolled (finishes) edges are rolled in —- mill.
A) Cluster B) Universal C) Four high D) Continuous

A

Universal

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25
Q

Two pairs of roller whose axes are perpendicular to each other in — rolling mill.
A) Universal B) Cluster C) Four high D) Continuous

A

Universal

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25
Q

Donut shaped workpiece is placed between rollers in — type of rolling mill.
A) Skew B) Thread C) Ring D) Transverse

A

Ring

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26
Q

—- rolling mills are called Roll Forging Mills.
A) Transverse B) Skew C) Thread D) Ring

A

Transverse

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26
Q

——– rolling mill is used to produce steel balls for ball bearings.
A) Transverse B) Skew C) Ring D) Cluster

A

Skew

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27
Q

The defect in rolling due to poor material ductility at the rolling temperature.
A) Wavy edge B) Zipper cracks C) Edge cracks D) Alligatoring

A

Edge cracks

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28
Q

At one point along the contact of the rolls, the velocity of strip and rolls are same
and it is called—–
A) Rigid point B) No slip point C) Neutral point D) Both B & C

A

Both B & C

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29
Q

Extrusion in which fluid pressure is applied to deform the metal —-
A) Impact B) Indirect C) Hydrostatic D) Direct

A

Hydrostatic

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29
Q

In extrusion “center burst” defect is due to —-
A) High die angle B) Low extrusion ratio C) Impurities in work D) All

A

All

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29
Q

The defect in rolling due to non-uniform deformation during rolling is —–
A) Wavy edge B) Zipper cracks C) Edge cracks D) Alligatoring

A

Alligatoring

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29
Q

The velocity of strip is maximum in rolling at —— the rollers.
A) Entering B) Middle of contact C) Exit of D) at 1/3 contact

A

Exit of

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30
Q

Roll moves faster than the strip ——- neutral point.
A) Before B) at the C) after D) All times

A

Before

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31
Q

Maximum reduction in thickness of work in rolling depends on ——–
A) Roll diameter B) Friction C) Strength of material D) Both A & B

A

Both A & B

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31
Q

Cemented carbide material is used for die making in cold extrusion when —–
required.
A) Long die life B) Dimensional control C) High production rates D) All

A

All

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31
Q

With —- rolls more reduction is possible in rolling process.
A) Smooth B) Rough C) Semi-finished D) Hard

A

Rough

32
Q

If sticking occurs in rolling, the coefficient of friction is approximately —–
A) 0.1 B) 0.2 C) 0.4 D) 0.7

A

0.7

32
Q

Extrusion is a simple —– metal forming process.
A) Compressive B) Tensile C) Both A & B D) Shear

A

Compressive

32
Q

The direction of movement of both ram and work material is same in —- type of
extrusion.
A) Direct B) Indirect C) Hydrostatic D) Both A & C

A

Both A & C

32
Q

Tooth paste tubes are produced by —— extrusion.
A) Hydrostatic B) Impact C) Direct D) All

A

Impact

33
Q

The forming process used to produce frames, doors, windows in automotive
industry is —-
A) Rolling B) Forging C) Spinning D) Extrusion

A

Extrusion

33
Q

Cold extrusion forging is a similar extrusion process as —–
A) Impact B) Hydrostatic C) Direct D) Indirect

A

Impact

34
Q

The extrusion defect “center burst” is also called —
A) Center cracking B) Arrow head fracture C) Chevron cracking D) All

A

All

35
Q

Forging applies —- forces to deform the material.
A) Tensile B) Compressive C) Shear D) All

A

Compressive

35
Q

Formation of sink hole in the end of a billet in extrusion is called —- defect.
A) Chevron crack B) Arrow head C) Fishtailing D) All

A

Fishtailing

36
Q

Process used to reduce the diameter of a tube or a rod at the end, to create
tapered section is —-
A) Swaging B) Radial forging C) Roll forging D) Both A & B

A

Both A & B

36
Q

Barreling effect is a common problem in —- forging.
A) Closed die B) Open die C) Hammer D) Press

A

Open die

37
Q

Oxidation and scaling on workpiece is a common problem in —- forging.
A) Cold B) Warm C) Hot D) All

A

Hot

38
Q

Forging dies are made with —– material.
A) Mild steel B) Cast Iron C) Carbon Steel D) Tool Steel

A

Tool Steel

38
Q

The forging process extensively used for production of bolt and screw heads is –
A) Swaging B) Cold heading C) Upset forging D) Both B & C

A

Both B & C

39
Q

Multiple impact blows are required in —- forging.
A) Hammer B) Press C) Closed die D) Cold

A

Hammer

39
Q

Die life is more in —- type of forging.
A) Press B) Hammer C) Hot D) Warm

A

Press

40
Q

In —– forging one of the die is tilted to a preset angle.
A) Radial B) Roll C) Orbital D) Swaging

A

Orbital

41
Q

The cold working process to create very fine and intricate details on the work
surface is —
A) Sizing B) Coining C) Embossing D) Swaging

A

Coining

41
Q

To eliminate problems in forging super alloys and materials like Titanium, the
forging process is —-
A) Roll forging B) Isothermal forging C) Swaging D) Cold forging.

A

Isothermal forging

42
Q

The cold working process to accurately produce dimensional tolerance is —
A) Embossing B) Coining C) Sizing D) All

A

Sizing

43
Q

In metal spinning —- serves as support for the workpiece.
A) Die B) Special tools C) Discs D) Mandrel

A

Mandrel

44
Q

In metal spinning the material is subject to —- forces during deformation.
A) Tensile B) Compressive C) Shear D) Both A & B

A

Both A & B

45
Q

Bottom of large tanks, hoppers are produced by —
A) Rolling B) Forging C) Spinning D) All

A

Spinning

45
Q

Sheet metal parts of all kinds are produced by —-
A) Coining B) Embossing C) Sizing D) All

A

Embossing

46
Q

Theoretically maximum possible reduction in one pass in wire drawing is —-
A) 30% B) 36% C) 63% D) 45%

A

63%

46
Q

Wire drawing process is similar to —— process.
A) Rolling B) Extrusion C) Forging D) Spinning

A

Extrusion

46
Q

Spokes for wheels are produced by —– process.
A) Extrusion B) Forging C) Wire drawing D) Spinning

A

Wire drawing

47
Q

The major process parameters in wire drawing —-
A) Reduction in cross section B) Die angle C) Friction D) All

A

All

48
Q

The operation that is used to reduce the diameter or wall thickness of tubes is —
A) Tube drawing B) Tube sinking C) Seamless tubing D) Both A & B

A

Both A & B

49
Q

For fine wire drawing the die material used is —
A) Diamond B) Tool steel C) Cast steel D) All

A

Diamond

49
Q

Pressworking operations involve —- of parts from sheet metal.
A) Cutting B) Forming C) Both A & B D) Bulk deformation

A

Both A & B

50
Q

——- is sheet metal forming operation.
A) Squeezing B) Blanking C) Notching D) All

A

Squeezing

51
Q

—— is sheet metal cutting operation.
A) Squeezing B) Bending C) Drawing D) None

A

None

51
Q

Vessel shaped parts are produced in — press working operation.
A) Bending B) Drawing C) Squeezing D) Blanking

A

Drawing

51
Q

Squeezing operation includers =======
A) Coining B) Sizing C) Riveting D) All

A

All

52
Q

—- press forming process produces cup like cylindrical parts.
A) Deep drawing B) Squeezing C) Spinning D) Bending

A

Deep drawing

52
Q

In deep drawing maximum amount of deformation occurs in —–
A) Bottom of the cup B) Walls of cup C) Flange D) All

A

Walls of cup

53
Q

Material for deep drawing should have the property —-
A) Malleability B) Ductility C) Toughness D) All

A

Ductility

53
Q

Materials used in deep drawing are ——
A) Aliminium B) Copper C) Brass D) All

A

All

53
Q

The deep drawing defect that produces cup walls having peaks and valleys is —
A) Wrinkling B) Tearing C) Earing D) Scratching

A

Earing

54
Q

The deep drawing defect that produces crack in the cup near the base is —–
A) Wrinkling B) Tearing C) Earing D) Scratching

A

Tearing

55
Q

In —– press working operation, there is no change in the thickness of the sheet
metal.
A) Bending B) Stretching C) Deep drawing D) All

A

Bending

56
Q

The concept of spring back is related to ——- process.
A) Stretching B) Deep drawing C) Bending D) Spinning

A

Bending

56
Q

Spring back can be taken care by ——
A) Over bending B) less bending C) Bottoming D) Both A & C

A

Both A & C

57
Q

——-type of bending uses cantilever loading.
A) V – bending B) U – bending C) Edge bending D) All

A

Edge bending

57
Q

The most common sheet bending method is - —-
A) V – bending B) U – bending C) Edge bending D) All

A

V - bending

57
Q

Large contoured parts are produced in ——- process.
A) Spinning B) Stretch forming C) Deep Drawing D) Bending

A

Stretch forming

58
Q

The most common stretch forming presses are oriented in —- position.
A) Horizontal B) Vertical C) Inclined D) All positions

A

Vertical

59
Q

Wing panels on aircraft are produced by —– process.
A) Stretch forming B) Deep drawing C) Bending D) Spinning

A

Stretch forming

59
Q

The sheet metal cutting operation that produces required holes is —-
A) Blanking B) Piercing C) Shearing D) Notching

A

Piercing

59
Q

The cutting operation in which the hole is partially cut and then one sike is bent
down is — A) Notching B) Slitting C) Lancing D) Nibbling

A

Lancing

60
Q

Press cutting operation which substitute to blanking is —-
A) Lancing B) Slitting C) Punching D) Nibbling

A

Nibbling

60
Q

Plate that is used to remove the metal sheet from a cutting or non-cutting punch is
–
A) Stripper B) Knockout C) Punch plate D) All

A

Stripper

60
Q

The mechanism used to eject the workpiece from die is called —-
A) Stripper B) Knockout C) Die plate D) Pitman

A

Knockout

61
Q

Center of pressure is an imaginary point in the blank at which resultant force due to
—– acts.
A) Tension B) Compression C) Shear D) All

A

Shear

61
Q

—— should be provided between die and punch to facilitate press working.
A) Penetration B) Clearance C) Draft D) Angular

A

Clearance

62
Q

During cutting action the punch moves into sheet to a certain thickness of sheet
before fracture occurs which is called —–
A) Penetration B) Clearance C) Angular relief D) Shearing

A

Penetration

62
Q

More clearance is provided between punch and die while working with —-
materials.
A) Ductile B) Tough C) Hard D) All

A

Hard

62
Q

Provision of shear on punch or die will —- the forces in sheet cutting.
A) Increases B) Decreases C) Neutralize D) No affect

A

Decreases

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