MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Thermal Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a conatainer, having a mixture of steam and air, the specific volumes of air and steam are 42 m3/kg and 55 m3/kg. Calculate the total mass of the mixture present inside the container if the mass of steam inside the container is 4.23 kg. |
| A. | 9.77 kg |
| B. | 10.23 kg |
| C. | 12.85 kg |
| D. | 15.64 kg |
| Answer» B. 10.23 kg | |
| 2. |
Given specific volume of steam as 54.25 m3/kg and volume of the container as 190 m3, calculate the mass of steam present inside the container. |
| A. | 3.0 kg |
| B. | 3.5 kg |
| C. | 4.0 kg |
| D. | 4.5 kg |
| Answer» C. 4.0 kg | |
| 3. |
Which of the following expression is the correct one for calculating total mass of mixture present in a container? (In terms of mass of air) |
| A. | m<sub>a</sub> ( {1+ frac{v_g}{v_a} } ) |
| B. | m<sub>a</sub> ( {1- frac{v_g}{v_a} } ) |
| C. | m<sub>a</sub> ( {1+ frac{v_a}{v_g} } ) |
| D. | m<sub>a</sub> ( {1- frac{v_a}{v_g} } ) |
| Answer» D. m<sub>a</sub> ( {1- frac{v_a}{v_g} } ) | |
| 4. |
Which of the following expression is the correct one for calculating total mass of mixture present in a container? (In terms of mass of vapour) |
| A. | m<sub>s</sub> ( {1- frac{v_g}{v_a} } ) |
| B. | m<sub>s</sub> ( {1+ frac{v_g}{v_a} } ) |
| C. | m<sub>s</sub> ( {1- frac{v_a}{v_g} } ) |
| D. | m<sub>s</sub> ( {1+ frac{v_a}{v_g} } ) |
| Answer» C. m<sub>s</sub> ( {1- frac{v_a}{v_g} } ) | |
| 5. |
Dalton s law of partial pressure states that the total pressure exerted by a mixture of gas and vapour is the sum of partial pressure of the gas and partial pressure of the vapour at the common temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |