Which of the following is true for the adiabatic expansion of a gas? Selected An

Question

Which of the following is true for the adiabatic expansion of a gas?

Selected Answer:

2.

pressure decreases

pressure is constant

1. The name of an engine cycle, describing most internal combustion engines using adiabatic compression to initiate ignition of a fuel air mixture 2. A real engine cycle, having a higher efficiency than an internal combusion engine 3. A theoretical engine cycle, having the maximum thermodynamic efficiency possible operating between a hot reservoir and a cold reservoir 4. The name of an engine cycle, describing most internal gassoline combustion engines using a spark plug to initiate ignition of a fuel air mixture 5. A real engine cylce that describes the use of steam to produce work at most power plants

Which of the following is true for the adiabatic expansion of a gas?

Selected Answer:

2.

pressure decreases

pressure is constant

Explanation / Answer

Part 1 ans : statement 2:A real engine cycle, having a higher efficiency than an internal combusion engine

Part 2 ans: pressure decreases, no heat exchange.

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