Consider an engine that absorbs $130 \text{ cal}$ of heat from a hot reservoir and delivers $30 \text{ cal}$ of heat to a cold reservoir in each cycle. The engine also consumes $2 \text{ J}$ of energy in each cycle to overcome friction. If the engine works at $90 \text{ cycles per minute}$, what will be the maximum power delivered to the load (in $\text{ W}$)? [Assume the thermal equivalent of heat is $4.2 \text{ J/cal}$]
- A$816$
- B$819$
- C$627$
- D$630$
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$A$ process is shown in the diagram. Which of the following curves may represent the same process?
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View Solution$A$ real gas within a closed chamber at $27^{\circ} C$ undergoes the cyclic process as shown in the figure. The gas obeys the $PV^3 = RT$ equation for the path $A$ to $B$. The net work done in the complete cycle is (assuming $R = 8 \, J/mol \cdot K$): (in $ \, J$)
DifficultJEE MAIN 2024
View SolutionOne mole of an ideal monoatomic gas undergoes the following four reversible processes:
Step $1$: It is first compressed adiabatically from volume $8.0 \, m^{3}$ to $1.0 \, m^{3}$.
Step $2$: Then expanded isothermally at temperature $T_{1}$ to volume $10.0 \, m^{3}$.
Step $3$: Then expanded adiabatically to volume $80.0 \, m^{3}$.
Step $4$: Then compressed isothermally at temperature $T_{2}$ to volume $8.0 \, m^{3}$.
Then,$T_{1} / T_{2}$ is:
Step $1$: It is first compressed adiabatically from volume $8.0 \, m^{3}$ to $1.0 \, m^{3}$.
Step $2$: Then expanded isothermally at temperature $T_{1}$ to volume $10.0 \, m^{3}$.
Step $3$: Then expanded adiabatically to volume $80.0 \, m^{3}$.
Step $4$: Then compressed isothermally at temperature $T_{2}$ to volume $8.0 \, m^{3}$.
Then,$T_{1} / T_{2}$ is:
DifficultKVPY 2017
View SolutionThermodynamic processes are indicated in the following diagram. Match the following:
Column-$1$ Column-$2$ $P$: Process-$I$ $A$: Adiabatic $Q$: Process-$II$ $B$: Isobaric $R$: Process-$III$ $C$: Isochoric $S$: Process-$IV$ $D$: Isothermal
| Column-$1$ | Column-$2$ |
| $P$: Process-$I$ | $A$: Adiabatic |
| $Q$: Process-$II$ | $B$: Isobaric |
| $R$: Process-$III$ | $C$: Isochoric |
| $S$: Process-$IV$ | $D$: Isothermal |
MediumNEET 2017
View SolutionAn ideal gas undergoes a thermodynamic cycle as shown in the figure. Which of the following graphs represents the same cycle?
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