Question

The diagrammatic representation of a heat engine above shows which of the following?

• A. Positive work
• B. An adiabatic process
• C. An isobaric process
• D. Negative work

Hint:

In an isobaric process, the pressure remains constant, and the system either absorbs or releases heat to do work.

Answer 1

The Correct Option is C

An isobaric process is one in which the pressure remains constant. In such a process, the volume of the gas changes while the pressure stays the same. If the heat engine in the diagram operates under conditions of constant pressure, the process is classified as an isobaric process. During an isobaric process, the system can perform work by expanding or compressing, and the pressure does not change during these phases. The work done in an isobaric process can be calculated as the product of the constant pressure and the change in volume. Therefore, the work is done at constant pressure during the expansion and compression phases of the cycle, ensuring that the process remains isobaric.

Hence, the correct answer is (c).