1
GATE ME 2023
MCQ (More than One Correct Answer)
+1
-0
In a metal casting process to manufacture parts, both patterns and moulds provide shape by dictating where the material should or should not go. Which of the option(s) given correctly describe(s) the mould and the pattern?
A
Mould walls indicate boundaries within which the molten part material is allowed, while pattern walls indicate boundaries of regions where mould material is not allowed.
B
Moulds can be used to make patterns.
C
Pattern walls indicate boundaries within which the molten part material is allowed, while mould walls indicate boundaries of regions where mould material is not allowed.
D
Patterns can be used to make moulds.
2
GATE ME 2023
MCQ (Single Correct Answer)
+2
-0.66

In an ideal orthogonal cutting experiment (see figure), the cutting speed V is 1 m/s, the rake angle of the tool Ξ± = 5Β°, and the shear angle, πœ™, is known to be 45Β°.

Applying the ideal orthogonal cutting model, consider two shear planes PQ and RS close to each other. As they approach the thin shear zone (shown as a thick line in the figure), plane RS gets sheared with respect to PQ (point R1 shears to R2, and S1 shears to S2).

Assuming that the perpendicular distance between PQ and RS is 𝛿 = 25 ΞΌm, what is the value of shear strain rate (in s-1 ) that the material undergoes at the shear zone?

GATE ME 2023 Production Engineering - Metal Cutting Question 3 English
A
1.84 Γ— 104
B
5.20 Γ— 104
C
0.71 Γ— 104
D
1.30 Γ— 104
3
GATE ME 2023
MCQ (Single Correct Answer)
+2
-0.66

A CNC machine has one of its linear positioning axes as shown in the figure, consisting of a motor rotating a lead screw, which in turn moves a nut horizontally on which a table is mounted. The motor moves in discrete rotational steps of 50 steps per revolution. The pitch of the screw is 5 mm and the total horizontal traverse length of the table is 100 mm. What is the total number of controllable locations at which the table can be positioned on this axis?

GATE ME 2023 Production Engineering - Metal Cutting Question 2 English
A
5000
B
2
C
1000
D
200
4
GATE ME 2023
Numerical
+2
-0

The atomic radius of a hypothetical face-centered cubic (FCC) metal is (√2/10) nm. The atomic weight of the metal is 24.092 g/mol. Taking Avogadro’s number to be 6.023 Γ— 1023 atoms/mol, the density of the metal is ____________ kg/m3 .

(Answer in integer)

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