MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
We cannot use steam as a drying gas to remove moisture as it would rather condense and reverse the results. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Above the _________________ drying in steam is faster than drying in perfectly dry air at the same temperature. |
| A. | Superheated steam temperature |
| B. | Inversion-point temperature |
| C. | Critical point temperature |
| D. | Sub –critical point temperature |
| Answer» C. Critical point temperature | |
| 3. |
Sub-cooled steam is not suited steam for drying process as it would ________ |
| A. | Condense back |
| B. | Not condense back |
| C. | Not heat much |
| D. | Heat it way to far |
| Answer» B. Not condense back | |
| 4. |
____________ is used as a precursor/ primary process to the drying of heavily moist materials when the moisture-solid bonding is quite weak. |
| A. | Desiccation |
| B. | Dehydration |
| C. | Drying |
| D. | Dewatering |
| Answer» E. | |
| 5. |
Dewatering uses __________ to remove the moisture content of the feed. |
| A. | Pressure gradient |
| B. | Temperature gradient |
| C. | Dry air blow |
| D. | Superheated steam blow |
| Answer» B. Temperature gradient | |
| 6. |
Which one of the following methods uses pressure drop/ lowering of applied pressure to remove the moisture content? |
| A. | Desiccation |
| B. | Dehydration |
| C. | Drying |
| D. | Dewatering |
| Answer» E. | |
| 7. |
Which one of the following is used to completely remove water and helps in preservation of foods? |
| A. | Desiccation |
| B. | Dehydration |
| C. | Drying |
| D. | Dewatering |
| Answer» B. Dehydration | |
| 8. |
Which one of the following processes try to remove moisture but retain other volatile components in the feed material, and is responsible for retaining important aromatic and flavouring properties of that solution/material? |
| A. | Desiccation |
| B. | Dehydration |
| C. | Drying |
| D. | Dewatering |
| Answer» C. Drying | |
| 9. |
Dehydration removes moisture _________ efficiency as Desiccation. |
| A. | With less |
| B. | With more |
| C. | With same |
| D. | With very much larger |
| Answer» B. With more | |
| 10. |
Which one of the following method removes water molecule by changing its chemical composition? |
| A. | Drying |
| B. | Dehydration |
| C. | Dewatering |
| D. | De-moisturising |
| Answer» C. Dewatering | |
| 11. |
Dehydration and drying are more or less synonyms and have the same operation and purpose. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Dryers can generate internal heating in the feed by ______________ |
| A. | Dielectric or inductive heating |
| B. | Convection |
| C. | Conduction |
| D. | Combined three means of heating |
| Answer» B. Convection | |