Mechanical Engineering : Thermodynamics QUESTIONS AND ANSWERS :: part5 : 6 to 10
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly |
| temperature |
| enthalpy |
| internal energy |
| entropy |
| all of the above. |
7.Carnot cycle efficiency depends upon |
| properties of the medium/substance used |
| condition of engine |
| working condition |
| temperature range of operation |
| effectiveness of insulating material around the engine. |
8.The door of a running refrigerator inside a room was left open. Which of the following statements is correct? |
| The room will be cooled to the temperature inside the refrigerator. |
| The room will be cooled very slightly. |
| The room will be gradually warmed up. |
| The temperature of the air in room will remain unaffected. |
| any one of above is possible depending on the capacity. |
9.Kelvin Planck's law deals with |
| conservation of heat |
| conservation of work |
| conversion of heat into work |
| conversion fo work into heat |
| conservation of mass. |
10.The unit of universal gas constant is |
| watts/�K |
| dynes/�C |
| ergscm/�K |
| erg/�K |
| none of the above. |
More Thermodynamics QUESTIONS AND ANSWERS available in next pages
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