Manufacturing Processes

ME4I

22446

Topics

Forging, rolling and extrusion

1   In forging compressive force can be exerted by Hammer, press, upsetting machine, rollers
    (A)   TRUE
    (B)   FALSE
Answer: Option A
2   Type of force applied through die in forging is
    (A)   Tensile force
    (B)   Compressive force
    (C)   Shear force
    (D)   None of above
Answer: Option B
3   Forging is carried out at which temperature
    (A)   Bellow recrystallization temperature
    (C)   Above recrystallization temperature
    (D)   Bellow & above recrystallization temperature
    (B)   Above melting Point
Answer: Option B
4   In forging compressive force can be exerted by
    (A)   Hammer
    (B)   Press
    (C)   Upsetting machine
    (D)   All of above
Answer: Option D
5   Which of the following forging operation reduces the height of forging &increases its diameter
    (A)   Cogging
    (B)   Upsetting
    (C)   Expanding
    (D)   None of above
Answer: Option B
6   The material which squeezes out between the faces of the die is known as
    (A)   Slag
    (B)   Flash
    (C)   Scale
    (D)   Misrun
Answer: Option B
7   Type of force applied through die in forging is
    (A)   Tensile force
    (B)   Compressive force
    (C)   Shear force
    (D)   None of above
Answer: Option B
8   Which of the following property is not improved by hot forging?
    (A)   Elastic limit
    (B)   Work hardening
    (C)   Ultimate tensile strength
    (D)   Brittleness
Answer: Option D
9   Which of the following is not the type of rolling mill?
    (A)   Two high rolling mill
    (B)   Cluster rolling mill
    (C)   Separation rolling mill
    (D)   Tandem rolling mill
Answer: Option C
10   In two high roll mill, what is the direction of rolling of two rollers?
    (A)   Clockwise-anticlock wise
    (B)   Clockwise-clockwise
    (C)   Anticlockwise-anticlockwise
    (D)   None of above
Answer: Option A
11   Which of the following articles cannot be made from rolling?
    (A)   Rails
    (B)   Bars
    (C)   Plates
    (D)   Gears
Answer: Option D
12   Material which is squeezed out between faces of dies is known as
    (A)   Slag
    (B)   Flash
    (C)   Scale
    (D)   Misrun
Answer: Option B
13   In rolling there is no slipping between roller & work piece
    (A)   TRUE
    (C)   FALSE
Answer: Option A
14   In a four high rolling mill, there are four rolls out of which
    (A)   One is working roll and three are backing up rolls
    (B)   Two are working rolls and two are backing up rolls
    (C)   Three are working rolls and one is backing up roll
    (D)   None of the above
Answer: Option B
15   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)   None of the above
Answer: Option B
16   In a four high rolling mill, the diameter of backing up rolls is —- the diameter of working rolls
    (A)   Equal to
    (B)   Smaller than
    (C)   Larger than
    (D)   None of these
Answer: Option C
17   During rolling process, the thickness of workpiece squeezed is called what?
    (A)   Shaft
    (B)   Bore
    (C)   Draft
    (D)   Core
Answer: Option C
18   Which of the following is not a type of rolling mill?
    (A)   Two-high rolling mill
    (B)   Cluster rolling mill
    (C)   Separation rolling mill
    (D)   Tandem rolling mill
Answer: Option C
19   Which of the following articles cannot be made from rolling?
    (A)   Rails
    (B)   Helmets
    (C)   Bars
    (D)   Plates
Answer: Option B
20   Before beginning the process, the ingots are heated up to what temperature?
    (A)   1000°C
    (B)   1200°C
    (C)   1400°C
    (D)   1600°C
Answer: Option B
21   The process of formation of new grains is known as
    (A)   Pre-crystallization
    (B)   Re-crystallization
    (C)   Crystallization
    (D)   Post-crystallization
Answer: Option B
22   The hot working of metal, is accomplished at
    (A)   below recrystallization temperature
    (B)   above recrystallization temperature
    (C)   recrystallization temperature
    (D)   any of the above
Answer: Option B
23   Following are the advantages of hot working of metals, except
    (A)   close tolerances can be maintained
    (C)   porosity of the metal is minimized
    (D)   grain structure of the metal is refined
    (B)   no residual stresses are introduced
Answer: Option A
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Press working

1   Trimming is process associated with—
    (A)   Press work
    (B)   Forging
    (C)   Polishing
    (D)   Electroplating
Answer: Option A
2   Cutting & forming operation can be done in a single operation on—
    (A)   Simple dies
    (B)   Progressive die
    (C)   Compound die
    (D)   Combination die
Answer: Option D
3   —— is used to cut sheet metal
    (A)   Bending
    (B)   Welding
    (C)   Notching
    (D)   Drilling
Answer: Option C
4   Which process is used to manufacture plastic pipes?
    (A)   Injection moulding
    (B)   Extrusion moulding
    (C)   Blow moulding
    (D)   Vacuum forming
Answer: Option B
5   Plastic bottles are manufactured by
    (A)   Blow moulding
    (B)   Injection moulding
    (C)   Die casting
    (D)   None of above
Answer: Option A
6   Which method is used to manufacture plastic pipe
    (A)   Injection moulding
    (B)   Extrusion moulding
    (C)   Blow Moulding
    (D)   Vacuum forming
Answer: Option B
7   Which of the following is an example of blow moulding?
    (A)   Camera bodies
    (B)   Plastic Bottles
    (C)   Automobile parts
    (D)   Electric plug
Answer: Option B
8   In bending operation metal takes shape of—–
    (A)   Die
    (B)   Punch
    (C)   Average of two
    (D)   Could not take shape
Answer: Option B
9   Punching a number of holes in sheet is known as
    (A)   Perforating
    (B)   Parting
    (C)   Notching
    (D)   Lancing
Answer: Option A
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Pattern making and casting

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Welding

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Lathe and drilling machine

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Plastic moulding

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