A cyclic process of a thermodynamic system is taken through $a$ $b$ $c$ $d$ $a$. The work done by the gas along the path $b$ $c$ is
- A$30 \mathrm{~J}$
- B$-90 \mathrm{~J}$
- C$-60 \mathrm{~J}$
- ✓Zero
Answer: D.
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11. thermodynamics question types
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Sample Questions
11. thermodynamics questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
A Carnot engine has an efficiency of $50 \%$ when its source is at a temperature $327^{\circ}\,C$. The temperature of the sink is $.........^{\circ} C$
- A$200$
- ✓$27$
- C$15$
- D$100$
Answer: B.
View full solution →An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among $1,2,3$ and $4$ is
- ✓$2$
- B$3$
- C$4$
- D$1$
Answer: A.
View full solution →An ideal gas follows a process described by the equation $PV ^2= C$ from the initial $\left( P _1, V _1, T _1\right)$ to final $\left(P_2, V_2, T_2\right)$ thermodynamics states, where $C$ is a constant. Then
- AIf $P_1 > P_2$ then $T_1 < T_2$
- BIf $V_2 > V_1$ then $T_2 > T_1$
- ✓If $V_2 > V_1$ then $T_2 < T_1$
- DIf $P_1 > P_2$ then $V_1 > V_2$
Answer: C.
View full solution →Two cylinders $A$ and $B$ of equal capacity are connected to each other via a stop cock. A contains an Ideal gas at standard temperature and pressure. $B$ is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :
- Aisobaric
- Bisothermal
- ✓adiabatic
- Disochoric
Answer: C.
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