Q1: 1. What is the purpose of a riser in casting?

• A) To feed molten metal into the mold
• B) To remove impurities from the metal
• C) To cool the metal quickly
• D) To shape the final product

Q2: 2. Which type of gating system is commonly used in sand casting?

• A) Sprue gate
• B) Runner gate
• C) Ingate
• D) Overflow gate

Q3: 3. In a casting process, what is the function of a feeder?

• A) To control the temperature of the metal
• B) To regulate the flow of metal into the mold
• C) To provide additional molten metal as the casting solidifies
• D) To shape the final product

Q4: 4. Which factor is NOT considered when designing gating systems?

• A) Metal type
• B) Casting size
• C) Mold material
• D) Casting temperature

Q5: 5. In a sand casting operation, the pouring cup is used for

• A) Pouring the molten metal into the mold
• B) Controlling the flow of metal
• C) Removing excess metal
• D) Shaping the mold

Q6: 6. Which type of gating system is commonly used in investment casting?

• A) Sprue gate
• B) Runner gate
• C) Ingate
• D) Overflow gate

Q7: 7. When designing a riser, what is the main consideration?

• A) Location
• B) Size
• C) Material
• D) Shape

Q8: 8. What is the primary function of a gating system in casting?

• A) To cool the molten metal
• B) To shape the final product
• C) To feed molten metal into the mold
• D) To remove impurities from the metal

Q9: 9. Which type of gating system is commonly used in die casting?

• A) Sprue gate
• B) Runner gate
• C) Ingate
• D) Overflow gate

Q10: 10. In a sand casting process, what is the purpose of a runner?

• A) To feed molten metal into the mold
• B) To shape the final product
• C) To remove impurities from the metal
• D) To cool the metal quickly

Q11: 11. A real-life problem: In a sand casting operation, if the riser is too small, what issue may arise?

• A) Porosity in the casting
• B) Excessive shrinkage defects
• C) Incomplete filling of the mold
• D) Warping of the final product

Q12: 12. Which type of gating system is typically used in permanent mold casting?

• A) Sprue gate
• B) Runner gate
• C) Ingate
• D) Overflow gate

Q13: 13. In riser design, the riser should solidify

• A) After the casting
• B) Concurrently with the casting
• C) Before the casting
• D) None of the above

Q14: 14. What is the purpose of a choke in a gating system?

• A) To regulate the flow of metal
• B) To cool the metal quickly
• C) To shape the final product
• D) To remove impurities from the metal

Q15: 15. In a low-pressure die casting process, what is the function of a vent in the gating system?

• A) To control the pressure inside the mold
• B) To release trapped air and gases
• C) To shape the final product
• D) To cool the metal quickly

Q16: 16. A real-life problem: If the gating system is too complex, what issue may occur during casting?

• A) Excessive turbulence in the mold
• B) Inadequate cooling of the metal
• C) Uneven distribution of molten metal
• D) Incomplete filling of the mold

Q17: 17. Which type of gating system is commonly used in centrifugal casting?

• A) Sprue gate
• B) Runner gate
• C) Ingate
• D) Overflow gate

Q18: 18. In a gating system, what is the function of a filter?

• A) To cool the metal quickly
• B) To remove impurities from the metal
• C) To regulate the flow of metal
• D) To shape the final product

Q19: 19. A real-life problem: In a high-pressure die casting operation, if the gating system is too small, what issue may arise?

• A) Porosity in the casting
• B) Excessive turbulence in the mold
• C) Incomplete filling of the mold
• D) Warping of the final product

Q20: 20. Which factor is NOT important when designing a riser?

• A) Shape
• B) Location
• C) Size
• D) Material

Q21: 21. What is the main purpose of a downsprue in a gating system?

• A) To feed molten metal into the mold
• B) To control the temperature of the metal
• C) To cool the metal quickly
• D) To shape the final product

Q22: 22. In a ceramic shell investment casting process, what is the function of a shell mold in the gating system?

• A) To control the flow of metal
• B) To remove impurities from the metal
• C) To cool the metal quickly
• D) To shape the final product

Q23: 23. A real-life problem: If the pouring temperature is too high, what issue may occur during casting?

• A) Inadequate cooling of the metal
• B) Excessive turbulence in the mold
• C) Uneven distribution of molten metal
• D) Warping of the final product

Q24: 24. What is the primary function of a riser in a casting process?

• A) To shape the final product
• B) To cool the metal quickly
• C) To feed molten metal into the mold
• D) To remove impurities from the metal

Q25: 25. In a permanent mold casting operation, what is the purpose of a cope and drag in the gating system?

• A) To shape the mold cavity
• B) To cool the metal quickly
• C) To remove impurities from the metal
• D) To regulate the flow of metal