MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Powder Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
________ atmosphere can be divided into dry hydrogen, exothermic and endothermic atmosphere. |
| A. | Reducing |
| B. | Oxidizing |
| C. | Inert |
| D. | Vacuum |
| Answer» B. Oxidizing | |
| 2. |
_________ can operate at temperatures of 1350 C. |
| A. | Mesh belt furnace |
| B. | Walking beam furnace |
| C. | Roller hearth furnace |
| D. | Radiant tube furnace |
| Answer» C. Roller hearth furnace | |
| 3. |
The sintering furnace can be classified on the basis of _________ |
| A. | temperature |
| B. | operation |
| C. | type of heating, and temperature |
| D. | operation, and atmosphere |
| Answer» E. | |
| 4. |
The transformer controls employ a transformer whose AC is connected to______ and DC is connected to _______ |
| A. | mains, thermistor |
| B. | thermocouple, mains |
| C. | mains, thermocouple |
| D. | thermistor, mains |
| Answer» D. thermistor, mains | |
| 5. |
Which of the following are the important temperature controls used in sintering furnace? |
| A. | Thermocouple |
| B. | Radiation pyrometers |
| C. | On-off controllers |
| D. | On-off controllers and proportional controllers |
| Answer» E. | |
| 6. |
Carbon potential control is important during sintering of ______ |
| A. | tungsten |
| B. | steel |
| C. | silicon carbide |
| D. | molybdenum |
| Answer» C. silicon carbide | |
| 7. |
The specific gravity analysis is especially sensitive to changes in _____ |
| A. | carbon dioxide |
| B. | carbon Monoxide |
| C. | methane |
| D. | oxygen |
| Answer» B. carbon Monoxide | |
| 8. |
The dew point measurement of a gas either entering or leaving a furnace gives an excellent indication of ________ |
| A. | specific gravity |
| B. | moisture content |
| C. | chemical potential |
| D. | carbon potential |
| Answer» E. | |
| 9. |
In a more sophisticated type of indicator for moisture analysis (where the sample gas is both compressed and expanded) the _________ of the gas is converted to the dew point. |
| A. | pressure ratio |
| B. | heat conductivity ratio |
| C. | volume ratio |
| D. | temperature ratio |
| Answer» B. heat conductivity ratio | |
| 10. |
Which solution is used to fill the dew cup for carrying out moisture analysis? |
| A. | Carboxylic acid |
| B. | Propane |
| C. | Ethyl alcohol |
| D. | Acetone |
| Answer» E. | |
| 11. |
The moisture content of the gas is determined using a _______ |
| A. | dew Jug |
| B. | dew Cup |
| C. | moisture cup |
| D. | dew meter |
| Answer» C. moisture cup | |