
Mechanical Engineering : Thermodynamics QUESTIONS AND ANSWERS :: part4 : 16 to 20
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.For reversible adiabatic process, change in entropy is |
maximum |
minimum |
zero |
unpredictable |
negative. |
17.Entropy change depends on |
heat transfer |
mass transfer |
change of temperature |
thermodynamic state |
change of pressure and volume. |
18.The more effective way of increasing efficiency of Carnot engine is to |
increase higher temperature |
decrease higher temperature |
increase lower temperature |
decrease lower temperature |
keep lower temperature constant. |
19.In an isothermal process, the internal energy |
increases |
decreases |
remains constant |
first increases and then decreases |
first decreases and then increases. |
20.If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called |
free expansion |
hyperbolic expansion |
adiabatic expansion |
parabolic expansion |
throttling. |
More Thermodynamics QUESTIONS AND ANSWERS available in next pages
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