MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials and Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the effect of Nickel on cast irons? |
| A. | Stabilizes carbides |
| B. | Increases hardness |
| C. | Refines grain structure |
| D. | Improves corrosion resistance |
| Answer» D. Improves corrosion resistance | |
| 2. |
How are malleable cast irons designated for different grades? |
| A. | By tensile strength |
| B. | By six or seven-digit numbers |
| C. | By five-digit numbers |
| D. | By alphabets |
| Answer» D. By alphabets | |
| 3. |
Which of the following cast irons cannot be machined? |
| A. | White cast iron |
| B. | Grey cast iron |
| C. | Malleable cast iron |
| D. | Spheroidal graphite cast iron |
| Answer» B. Grey cast iron | |
| 4. |
Decomposition of cementite to form ferrite and graphite is known as _______ |
| A. | Decomposition of cast irons |
| B. | Production of cast irons |
| C. | Growth of cast irons |
| D. | Prevention of growth of cast irons |
| Answer» D. Prevention of growth of cast irons | |