Previous Years GATE Questions on Forming Process 2001-2003

Solved GATE Questions on Forming Process

(A) 0.36

(B) 0.63

(C) 1.00

(D) 2.72

GATE-ME-2001

Hint 1.  (Ans *)

Question 2. The cutting force in punching and blanking operations mainly depends on

(A) the modulus of elasticity of metal

(B) the shear strength of metal

(C) the bulk modulus of metal

(D) the yield strength of metal

GATE-ME-2001

Hint 2. (Ans B)

Question 3. In blanking operation, the clearance is provided on

(A) the die

(B) both the die and punch equally

(C) the punch

(D) neither the punch nor the die

GATE-ME-2002

Hint 3. (Ans C)

Question 4. Hot rolling of mild steel is carried out

(A) at recrystallization temperature

(B) between 100 to 150

(C) below recrystallization temperature

(D) above recrystallization temperature

GATE-ME-2002

Hint 4. (Ans D)

(A) 19.88 mm

(B) 19.44 mm

(C) 20.06 mm

(D) 20.12 mm

GATE-ME-2003

Hint 5. (Ans A)

Punch diameter

Question 6. A brass billet is to be extruded from its initial diameter of 100 mm to a final diameter of 50 mm. The working temperature of 700 and the extrusion constant is 250 MPa. The force required for extrusion is

(A) 5.44 MN

(B) 2.72 MN

(C) 1.36 MN

(D) 0.36 MN

GATE-ME-2003

Hint 6. (Ans B)

Force required for extrusion

Where k=extrusion constant

Now,

Question 7. 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

(A) 118 mm

(B) 161 mm

(C) 224 mm

(D) 312 mm

GATE-ME-2003

Hint 7. (Ans C)

Let d= diameter of the shell = 100 mm

h= height of shell = 10 mm

Since d20r

Blank diameter

Question 8. Cold working of steel is defined as working

(A) At its recrystallization temperature

(B) Above its recrystallization temperature

(C) Below its recrystallization temperature

(D) At two third of the melting temperature of the metal

GATE-ME-2003

Hint 8. (Ans C)