(1) Briefly explain whether the following statements are truc or false. Don\'t w

Question

(1) Briefly explain whether the following statements are truc or false. Don't write a big story Write only the critical points in few sentences. (3 x 4 12 points) (a) Work required in changing the internal energy of the system from one state to another state is less for the adiabatic case (b) The increase of entropy means an increase of exergy (c) Entropy is the measure of disorder. (d) For Otto cycle, efficiency increases with the increase in compression ratio (r). Hence, we can keep increasing r as much as we want to get the higher efficiency

Explanation / Answer

a) True ( In adiabatic process since there is no heat transfer, work required will be less)

b) False (increase in entropy indicates degradation of energy, so more the entropy less will be the exergy)

c)True (entropy is the degree of disorderness)

d) False (In otto cycle efficiency increases with the increase in compression ratio, but if it is increased beyond certain limit it will lead to knocking.)

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.