MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
Heisler charts are valid if |
| A. | Fourier number is equal to 0.2 |
| B. | Fourier number is less than 0.2 |
| C. | Fourier number is greater than 0.2 |
| D. | Fourier number is equal to 0.4 |
| Answer» D. Fourier number is equal to 0.4 | |
| 2. |
What percentage of water an average human body can have? |
| A. | 52% |
| B. | 62% |
| C. | 72% |
| D. | 82% |
| Answer» D. 82% | |
| 3. |
The following data pertains to the junction of a thermocouple wire used to measure the temperature of the gas stream.Density = 8500 kg/m3, specific heat = 325 J/kg K, thermal conductivity = 40 W/m K and the heat transfer coefficient between the junction and gas = 215 W/m2 K. |
| A. | nIf thermocouple junction can be approximated as 1 mm diameter sphere, determine how long it will take for the thermocouple to read 99% of the initial temperature difference |
| B. | 9.86 seconds |
| C. | 8.86 seconds |
| D. | 7.86 seconds |
| E. | 6.86 seconds |
| Answer» B. 9.86 seconds | |
| 4. |
The response of a thermocouple is defined as the time required for the thermocouple to reach the surrounding temperature when it is exposed to it . |
| A. | True |
| B. | False |
| Answer» C. | |