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GATE Past Year Questions: Sheet Metal Operations | Manufacturing Engineering - Mechanical Engineering PDF Download

Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In a surface broaching process, a broach having 5 mm pitch and cut per teeth 0.05 mm is used for reducing the thickness by 6 mm. If the length of the workpiece is 50 mm and the cutting speed is 0.5 m/s, the time required/pass in second is

[PI 2006]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In deep drawing of sheet metal, spring loaded stripper clamps the work until:

[PI 2004]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:The function of draw bead in the deep drawing operation is to

[PI 1994]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In a bending operation, if the modulus of elasticity E is increased keeping all other parameters unehanged, the spring back will

[PI 1994]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Wall thickness of drawn cup is controlled by

[PI 1992]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A cup of 10 cm height and 5 cm diameter is to be made from a sheet metal of 2 mm thickness.The number of deductions necessary will be

[PI 1991]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In progressive die (for sheet metal), spring loaded stripper plate is used to clamp the stock until

[PI 1991]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Consider a linear elastic rectangular thin sheet of metal, subjected to uniform uniaxial tensile stress of 100 MPa along the length direction. Assume plane stress condition in the plane normal to the thickness. The Young’s modulus E = 200 MPa and Poisson’s ratio μ = 0.3 are given. The principal strains in the plane of the sheet are

[ME 2019,Set-2]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself: The value of true strain produced in compressing a cylinder to half its original length is

[ME 2016,Set-2]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In the deep drawing of cups, blanks show a tendency to wrinkle up around the periphery (flange). The most likely cause and remedy of the phenomenon are, respectively.

[ME 2008]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A shell of 100 mm diameter and 100 mm height with the corner radius of 0.4 mm is to be produced by cup drawing. The required blank diameter is

[ME 2003]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Identify the stress strain in flange portion of a partially drawn cylindrical cup when deep drawing without a blank holder

[ME 1999]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In deep drawing of sheets, the values of limiting drawing ratio depends on

[ME 1994]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Wrinkling is a common defect found is

[ME 1991]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Circular blanks of 10 mm diameter are punched from an aluminum sheet of 2 mm thickness.The shear strength of aluminum is 80 MPa.The minimum punching force required in kN is

[PI 2013]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A disc of 200 mm diameter is blanked from a strip of an aluminum alloy of thickness 3.2 mm.The material shear strength to fracture is 150 MPa.The blanking force (in kN) is

[PI 2009]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A blank of 50 mm diameter is to be sheared from a sheet of 2.5 mm thickness. The required radial clearance between the die and the punch is 6% of sheet thickness. The punch and die diameter (mm) for this blanking operation respectively are

[PI 2008]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Circular blanks of 35 mm dia are punched from a steel sheet of 2 mm thickness. If the clearance per side between the punch and die is to be kept as 40 microns. The sizes of punch and die should respectively be

[PI 2007]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself: It is required to punch a hole of diameter 10 mm on a sheet of thickness 3 mm. The shear strength of the work material is 420 MPa.The required punch force is

[PI 2006]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:It is require to punch a hole of diameter 10 mm on a sheet of thickness 3 mm. The shear strength of the work material is 420 MPa. The required punch force is

 [PI 2006]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A ϕ 25 mm hole is pierced in a t = 2.5 mm thick steel sheet having shear strength τ = 350 MPa.If the diametral clearance is given by the expression c = 0.0064 √τ, the die diameter (in mm), punch diameter (in mm) and punch force in (kN) respectively are

[PI 2005]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Determine the load required to punch a 20 mm diameter hole in 2 mm thick sheet. The properties of the material of the sheet are: Tensile strength – 580 MPa
Yield strength in tension – 410
MPa Shear strength – 350 MPa
Yield strength in shear – 250 MPa

The load in kN is

[PI 2004]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A hole of 40 mm diameter is pierced in a steel sheet of 4 mm thickness without shear on the tool. Shear strength of steel is 400 N/mm2 and penetration is 25%. What is the expected percentage load reduction if a shear of 1 mm is provided on the punch?

[PI 2004]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A cylindrical cup of 48.5 mm diameter and 52 mm height has a corner radius of 1.5 mm.Cold rolled steel sheet of thickness 1.5 mm is used to produce the cup. Assume trim allowance as 2 mm per 25 mm of cup diameter.What is the blank size in mm?

[PI 2004]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Consider the following statements related piercing and blanking
1. Shear on the punch reduces the maximum cutting force
2. Shear increases the capacity of the press needed
3. Shear increases the life of the punch
4. Total energy needed to make the cut remains unaltered due to provision of shear.

Which of the above statements are correct?

[PI 2003]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A hydraulic press is used to produce circular blanks of 10 mm diameter from a sheet of 2 mm thickness. If the shear strength of the sheet material is 400 N/mm2, the force required for producing a circular blank is

[PI 2003]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Which one is not a method of reducing cutting forces to prevent the overloading of press?

[PI 2003]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:For 50% penetration of work material, a punch with single shear equal to thickness will

[PI 2001]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In blanking operation, the best way to improve the smoothness and secureness of the edges is to

[PI 1994]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Calculate the smallest punch diameter that can be designed for piercing sheet metal strip with the following data. Crushing strength of the punch material is 1500 MPa. Thickness of the sheet is 2 mm, factor of safety is 3, shear strength of the sheet material 500 MPa is

[PI 1990]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Internal gears are manufactured by

[ME 2014,Set-2]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A rectangular hole of size 100 mm × 50 mm is to be made on a 5 mm thick sheet of steel having ultimate tensile strength and shear strength of 500 MPa and 300 MPa, respectively. The hole is made by punching process. Neglecting the effect of clearance, the punching force (in kN) is

[ME 2014,Set-2]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:Calculate the punch size in mm, for a circular blanking operation for which details are given below.

Size of the blank - 25 mm
Thickness of the sheet - 2 mm
Radial clearance between  punch and die 0.06 mm Die allowance 0.05 mm

[ME 2012]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:The shear strength of a sheet metal is 300 MPa.The blanking force required to produce a blank of 100 mm diameter from a 1.5 mm thick sheet is close to

[ME 2011]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:10 mm diameter holes are to be punched in a steel sheet of 3 mm thickness. Shear strength of the material is 400 N/mm2 and penetration is 40%. Shear provided on the punch is 2 mm.The blanking force during the operation will be

[ME 2004]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A metal disc of 20 mm diameter is to be punched from a sheet of 2 mm thickness. The punch and the dia clearance is 3%. The required punch diameter is

[ME 2003]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:In blanking operation the clearance is provided on

[ME 2002]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:The cutting force in punching and blanking operations mainly depends on

[ME 2001]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:A 50 mm diameter disc is to be punched out from a carbon steel sheet 1.0 mm thick. The diameter of the die should be (Take clearance as 3% of sheet thickness) _______.

[ME 1996]

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Question for GATE Past Year Questions: Sheet Metal Operations
Try yourself:The thickness of the blank needed to produce, by power spinning a missile cone of thickness 1.5 mm and half cone angle 30°

[ME 1992]

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FAQs on GATE Past Year Questions: Sheet Metal Operations - Manufacturing Engineering - Mechanical Engineering

1. What are the different types of sheet metal operations in mechanical engineering?
Ans. In mechanical engineering, the different types of sheet metal operations include cutting, bending, forming, deep drawing, and punching. These operations are commonly used to shape and manipulate sheet metal into desired components or products.
2. How is cutting done in sheet metal operations?
Ans. Cutting in sheet metal operations is typically done using tools like shears, lasers, or plasma cutters. These tools are used to remove unwanted sections of the sheet metal and create the desired shape or size. The cutting process may involve manual or automated techniques, depending on the complexity and precision required.
3. What is the purpose of bending in sheet metal operations?
Ans. Bending is a crucial operation in sheet metal fabrication as it allows the metal to be bent or folded at specific angles. This process is achieved using tools such as press brakes or folding machines. Bending is commonly used to create shapes like channels, brackets, or enclosures in sheet metal components.
4. How does deep drawing work in sheet metal operations?
Ans. Deep drawing is a sheet metal operation that involves creating a three-dimensional shape by using a punch and die set. The sheet metal is clamped between the two components, and the punch applies force to deform the metal into the desired shape. This process is commonly used to manufacture cylindrical or box-like components.
5. What is the role of punching in sheet metal operations?
Ans. Punching is a sheet metal operation that involves creating holes or cutouts in the metal using a punch and die set. The punch applies force onto the sheet metal, creating a hole or removing a section of the material. Punching is often used to create openings for fasteners, ventilation, or other functional requirements in sheet metal components.
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Document Description: GATE Past Year Questions: Sheet Metal Operations for Mechanical Engineering 2024 is part of Manufacturing Engineering preparation. The notes and questions for GATE Past Year Questions: Sheet Metal Operations have been prepared according to the Mechanical Engineering exam syllabus. Information about GATE Past Year Questions: Sheet Metal Operations covers topics like and GATE Past Year Questions: Sheet Metal Operations Example, for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for GATE Past Year Questions: Sheet Metal Operations.
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