GATE ME 2023 | Casting Question 6 | Production Engineering

GATE ME 2023

MCQ (More than One Correct Answer)

-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?

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.

Moulds can be used to make patterns.

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.

Patterns can be used to make moulds.

GATE ME 2022 Set 2

MCQ (Single Correct Answer)

-0.33

Fluidity of a molten alloy during sand casting depends on its solidification range. The phase diagram of a hypothetical binary alloy of components A and B is shown in the figure with its eutectic composition and temperature. All the lines in this phase diagram, including the solidus and liquidus lines, are straight lines. If this binary alloy with 15 weight % of B is poured into a mould at a pouring temperature of 800 °C, then the solidification range is

GATE ME 2022 Set 2 Production Engineering - Casting Question 7 English

400 °C

250 °C

800 °C

150 °C

GATE ME 2022 Set 2

MCQ (More than One Correct Answer)

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Consider sand casting of a cube of edge length a. A cylindrical riser is placed at the top of the casting. Assume solidification time, t_s ∝ V/A, where V is the volume and A is the total surface area dissipating heat. If the top of the riser is insulated, which of the following radius/radii of riser is/are acceptable?

$\frac{a}{3}$

$\frac{a}{2}$

$\frac{a}{4}$

$\frac{a}{6}$

GATE ME 2022 Set 2

MCQ (More than One Correct Answer)

-0

Which of these processes involve(s) melting in metallic workpieces?

Electrochemical machining

Electric discharge machining

Laser beam machining

Electron beam machining