Casting, Forming and Welding I Mock Test 4

10%

Question 1 of 10

1. Cores generally experience a single force called gravitational force in the mould.

False

True

Question 1 of 10

Question 2 of 10

2. Which method is used if the upper surface of casting is required to be smooth?

Dry sand molding

Bedded-in method molding

Open sand method molding

Turn-over method molding

Question 2 of 10

Question 3 of 10

3. How much is the floor sand in a typical dry sand molding mixture?

30%

35%

45%

40%

Question 3 of 10

Question 4 of 10

4. In which of the following molding process strength at the top of the mold is higher?

Jolting

Jolt and Squeezing

Hand molding

Squeezing

Question 4 of 10

Question 5 of 10

5. The dried plaster mould have __________

Moderate permeability

High permeability

Same amount of permeability as other moulds

Low permeability

Question 5 of 10

Question 6 of 10

6. The following figure represents which hand molding equipment?

Peen rammer

Draw spike

Gagger

Swab

Question 6 of 10

Question 7 of 10

7. High viscosity of molten metal can help in removing of gases but will cause defects in the casting.

True

False

Question 7 of 10

Question 8 of 10

8. Coarse sand grains of the core material can improve the refractoriness of the core.

False

True

Question 8 of 10

Question 9 of 10

9. For proper venting, the pouring time is increased which allow easy escape out of gases from the mould without inducing any defects.

True

False

Question 9 of 10

Question 10 of 10

10. In green sand mould, what is the indication of the word green?

Mould has been totally dried

Mould is green in color

It shows polymeric mould has been cured

Mould contains moisture

Question 10 of 10