MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
WHY_ARE_FLUX_ADDED_TO_THE_CHARGE_(_PARENT_METAL_TO_BE_MELTED)_DURING_MELTING_OF_A_METAL??$ |
| A. | To increase carbon content |
| B. | To increase refractoriness |
| C. | To add specific oxides |
| D. | To remove specific oxides |
| Answer» E. | |
| 2. |
Which of the following is/are the advantage(s) of an Induction Furnace?$ |
| A. | Higher yield |
| B. | Cleaner melting |
| C. | Compact Installation |
| D. | All of the mentioned |
| Answer» E. | |
| 3. |
In an induction furnace, mixing and melting rates are altered by?$ |
| A. | Controlling the temperature ranges only |
| B. | Controlling the number of electrodes used only |
| C. | Controlling power and frequency of current only |
| D. | All of the above factors |
| Answer» D. All of the above factors | |
| 4. |
Which of the following is/are not used to melt material in casting(foundry) industries? |
| A. | Cupola furnace |
| B. | Induction furnace |
| C. | Ladle furnace |
| D. | Crucible furnace |
| Answer» D. Crucible furnace | |
| 5. |
Why is inoculation done certain times during melting of cast iron? |
| A. | To enhance its mechanical properties |
| B. | To reduce the liquid shrinkage of metal |
| C. | To enhance the surface finishing |
| D. | All of the mentioned |
| Answer» B. To reduce the liquid shrinkage of metal | |
| 6. |
What is inoculation of cast iron? |
| A. | Addition of sulphur alloys |
| B. | Addition of silicon alloys |
| C. | Addition of oxides |
| D. | Addition of parent metal’s ore |
| Answer» C. Addition of oxides | |
| 7. |
Gas-Fired burner is used in which of the following furnace? |
| A. | Induction Furnace |
| B. | Reverberatory Furnace |
| C. | Cupola Furnace |
| D. | Crucible Furnace |
| Answer» C. Cupola Furnace | |
| 8. |
What is hearth in a furnace? |
| A. | The electrodes are often called hearth |
| B. | The walls of the furnace |
| C. | The bowl shaped bottom of the furnace |
| D. | The dome shaped roof of the furnace |
| Answer» D. The dome shaped roof of the furnace | |
| 9. |
There is no direct contact of flame and metal in which of the following type of furnace? |
| A. | Cupola |
| B. | Crucible |
| C. | Electric arc |
| D. | Induction |
| Answer» C. Electric arc | |
| 10. |
Electric arc furnaces are most suitable for which of the following type of material? |
| A. | Ferrous |
| B. | Non-Ferrous |
| C. | Both ferrous and nonferrous |
| D. | Neither ferrous nor nonferrous |
| Answer» B. Non-Ferrous | |
| 11. |
Which of the following metal has a melting point of about 1537oC and latent heat of fusion 65.0 cal/g? |
| A. | Nickel |
| B. | Copper |
| C. | Zinc |
| D. | Iron |
| Answer» E. | |
| 12. |
Which of the following chemical compound, is the most common flux added to the charge in a cupola furnace? |
| A. | Coke |
| B. | Methane |
| C. | Carbon dioxide |
| D. | Limestone |
| Answer» E. | |
| 13. |
Incoming air pressure and quantity in cupola furnace are controlled by which of the following element? |
| A. | Tuyeres |
| B. | Tapping spout |
| C. | Wind box |
| D. | Blast pipe |
| Answer» D. Blast pipe | |
| 14. |
What is the function of slag hole in a cupola furnace? |
| A. | To tap the slag generated |
| B. | To generate the slag |
| C. | To allow outflow of gases |
| D. | All of the mentioned |
| Answer» B. To generate the slag | |
| 15. |
Why is sand bed prepared for melting of metal in Cupola furnace? |
| A. | It provides a refractory bottom |
| B. | It soaks the moisture from the metal |
| C. | It conducts the heat faster and uniformly |
| D. | None of the mentioned |
| Answer» B. It soaks the moisture from the metal | |
| 16. |
For melting of cast iron, which of the following furnace is used? |
| A. | Rotary furnace |
| B. | Cupola furnace |
| C. | Pit furnace |
| D. | Electric furnace |
| Answer» C. Pit furnace | |