MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer Operations Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If given the surface tension of water as 73×10-3 N/m and diameter of capillary as 1mm, calculate the ratio of capillary-vapour pressure of water in this solid to the saturation vapour pressure at 25℃. |
| A. | 99.8% |
| B. | 90% |
| C. | 98% |
| D. | 97% |
| Answer» B. 90% | |
| 2. |
What is the term PO in the Kelvin equation given below? |
| A. | PO is the superheated vapour pressure |
| B. | PO is the saturation vapour pressure |
| C. | PO is the sub-cooled vapour pressure |
| D. | PO is the elevated vapour pressure |
| Answer» C. PO is the sub-cooled vapour pressure | |
| 3. |
70 – 90% reduction in thermal energy requirements can be achieved by which one of the following drying methods? |
| A. | Drum drying |
| B. | Airless drying |
| C. | Steam drying |
| D. | Salt drying |
| Answer» C. Steam drying | |