Jobs By Abekus

Metal-casting Questions Set 28:

Quiz Mode

Which of the following materials are not used for making chills?

cast iron

steel

copper

aluminum

Solution:

The most commonly used fuel for melting cast iron in a cupola furnace is:

Oil

Coal

Hard coke

Soft coke

Solution:

Which of the following casting processes use molds made of two or more different materials?

Investment casting

Centrifuging

Composite mold

Die casting

Solution:

Calculate the size (height and diameter) of a cylindrical riser to feed a steel slab casting of dimensions 14 cm x 6 cm x 20 cm.

16 cm

9 cm

3.15 cm

11.2 cm

Solution:

Which type of fluid flow is responsible for the shorter pouring time of molten metal in the mold?

Laminar flow

Viscous flow

Turbulent flow

Irrotational flow

Solution:

In permanent mold casting, the temperature at which the mold is used does not depend on

pouring temperature

casting wall thickness

casting weight

pressure in casting

Solution:

The pressure at the in-gate will be maximum with the gating system having the following ratio of sprue area : runner area : gate area

1 : 2 : 1

4 : 8 : 3

1 : 3 : 3

1 : 2 : 4

Solution:

A cubical casting of side 40 mm undergoes 3%, 4% and 5% volume shrinkage during the liquid state, phase transition and solid state, respectively. The volume of metal compensated from the riser is:

Solution:

A casting is to have a hole, to be produced by using a core of 15 cm diameter and 250 cm long. The density of the metal is 7850 kg/m³ and the density of the core is 1500 kg/m³. What is the upward force acting on the core prints in Newtons?

2752

2572

2722

2272

Solution:

Which of the following correctly defines Shrinkage Allowance?

Allowance that is added to account for the reduction in dimensions due to the distortion or bending in the casting.

Allowance that is added to account for the reduction in dimensions as, after solidification of the metal, further cooling reduces the dimensions of the casting.

Allowance that is added to account for the reduction in dimensions due to the machining operation done to improve the surface finish.

None of the above

Metal-casting Questions Set 28:

Which of the following materials are not used for making chills?

Solution:

The most commonly used fuel for melting cast iron in a cupola furnace is:

Solution:

Which of the following casting processes use molds made of two or more different materials?

Solution:

Calculate the size (height and diameter) of a cylindrical riser to feed a steel slab casting of dimensions 14 cm x 6 cm x 20 cm.

Solution:

Which type of fluid flow is responsible for the shorter pouring time of molten metal in the mold?

Solution:

In permanent mold casting, the temperature at which the mold is used does not depend on

Solution:

The pressure at the in-gate will be maximum with the gating system having the following ratio of sprue area : runner area : gate area

Solution:

A cubical casting of side 40 mm undergoes 3%, 4% and 5% volume shrinkage during the liquid state, phase transition and solid state, respectively. The volume of metal compensated from the riser is:

Solution:

A casting is to have a hole, to be produced by using a core of 15 cm diameter and 250 cm long. The density of the metal is 7850 kg/m³ and the density of the core is 1500 kg/m³. What is the upward force acting on the core prints in Newtons?

Solution:

Which of the following correctly defines Shrinkage Allowance?

Solution:

Related Question Sets:

Related Topics: