MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not a coating method for varnishes? |
| A. | Dip impregnation |
| B. | Vacuum impregnation |
| C. | Thick coat |
| D. | Flow coat |
| Answer» D. Flow coat | |
| 2. |
At what temperature is Class F operation carried out? |
| A. | 180<sup>o</sup>C |
| B. | 155<sup>o</sup>C |
| C. | 130<sup>o</sup>C |
| D. | 105<sup>o</sup>C |
| Answer» C. 130<sup>o</sup>C | |
| 3. |
What kind of varnishes are used for most temperatures or classes? |
| A. | Silicone |
| B. | Polyester |
| C. | Acrylic |
| D. | Epoxy |
| Answer» C. Acrylic | |
| 4. |
Acrylic varnishes are generally used in _______ gases. |
| A. | Acetylene |
| B. | Natural |
| C. | Refrigerant |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 5. |
Silicone varnishes have a ______ operation. |
| A. | Class A |
| B. | Class B |
| C. | Class F |
| D. | Class H |
| Answer» E. | |
| 6. |
Which of the following is not a property of insulating varnishes? |
| A. | Moisture resistance |
| B. | Abrasion resistance |
| C. | Electric strength |
| D. | Oil receptive |
| Answer» E. | |
| 7. |
Dissolved resins in alcohol produce ______ varnishes. |
| A. | Oleoresinous |
| B. | Phenolic |
| C. | Spirit |
| D. | Alkyd |
| Answer» D. Alkyd | |
| 8. |
Which of the following varnishes is oxidizing in nature? |
| A. | Air-drying |
| B. | Polymerizing |
| C. | Heat-reactive baking |
| D. | Solventless |
| Answer» B. Polymerizing | |