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UNIT-1 METAL CASTING

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

What is the process of converting raw materials into useful products called?

a)

Casting

b)

Manufacturing

c)

Molding

d)

Forging

2.

What is the process of producing metal parts by pouring molten metal into the mold cavity of the required shape called?

a)

Welding

b)

Forging

c)

Casting

d)

Extrusion

3.

Which type of casting process involves melting the metal and pouring it into a preformed cavity?

a)

Investment casting

b)

Centrifugal casting

c)

Sand casting

d)

Permanent mold casting

4.

What is the main advantage of shell molding in casting?

a)

Low cost

b)

Good dimensional accuracy

c)

Design flexibility

d)

High production rate

5.

Which type of casting process is commonly used for precision equipment and complex geometries?

a)

Centrifugal casting

b)

Permanent mold casting

c)

Investment casting

d)

Die casting

6.

What is the main disadvantage of investment casting?

a)

Good surface finish

b)

Low cost

c)

High production rate

d)

Many processing steps required

7.

Which type of mold casting process uses a metal mold constructed of two sections designed for easy opening and closing?

a)

Die casting

b)

Investment casting

c)

Permanent mold casting

d)

Centrifugal casting

8.

What is the defect called when a casting has solidified before completely filling the mold cavity?

a)

Cold Shut

b)

Misruns

c)

Shrinkage Cavity

d)

Microporosity

9.

Which type of furnace uses a continuous flow of iron emerging from the bottom of the furnace?

a)

Cupola Furnace

b)

Electric-arc Furnace

c)

Direct Fuel-fired furnace

d)

Induction Furnace

10.

What is the main advantage of die casting?

a)

Thin sections possible

b)

High production rate

c)

Good dimensional accuracy

d)

Economical

11.

Which type of casting process uses a permanent mold that is rotated about its axis as the molten metal is poured?

a)

Investment casting

b)

Centrifugal casting

c)

Die casting

d)

Shell molding

12.

What is the defect called when two portions of the metal flow together but lack fusion between them?

a)

Cold Shut

b)

Cold Shots

c)

Shrinkage Cavity

d)

Hot Tearing

13.

Which type of casting process is commonly used for producing components of home appliances and motors?

a)

Die casting

b)

Investment casting

c)

Centrifugal casting

d)

Permanent mold casting

14.

What is the main disadvantage of permanent mold casting?

a)

Good surface finish

b)

Low porosity

c)

High production rate

d)

Costly mold

15.

Which type of casting process uses a metal mold constructed of two sections designed for easy, precise opening and closing?

a)

Centrifugal casting

b)

Permanent mold casting

c)

Investment casting

d)

Die casting