Mechanical Engineering : Thermodynamics QUESTIONS AND ANSWERS :: part4 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.According to first law of thermodynamics |
| mass and energy are mutually convertible |
| Carnot engine is most efficient |
| heat and work are mutually convertible |
| mass and light are mutually convertible |
| heat flows from hot substance to cold substance. |
22.Molecular volume of any perfect gas at 600 x 103 N/m2 and 27�C will be |
| 4.17m3/kgmol |
| 400 m3/kg mol |
| 0.15 m3/kg mol |
| 41.7 m3/kg mol |
| 417m3/kgmol. |
23.The specific heat of air increases with increase in |
| temperature |
| pressure |
| both pressure and temperature |
| variation of its constituents |
| air flow |
24.Which of the following processes is irreversible process |
| isothermal |
| adiabatic |
| throttling |
| all of the above |
| none of the above. |
More Thermodynamics QUESTIONS AND ANSWERS available in next pages
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