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FAQs on Hand Written Notes: Ideal Cycle of IC Engine - Thermodynamics - Mechanical Engineering

1. What is the ideal cycle of an IC engine?
Ans. The ideal cycle of an IC engine is a theoretical cycle that represents the idealized process of how an engine operates. It consists of four main processes: intake, compression, power, and exhaust.
2. How does the ideal cycle of an IC engine differ from the actual cycle?
Ans. The ideal cycle of an IC engine assumes perfect conditions, such as no energy losses, constant specific heats, and ideal gas behavior. In reality, the actual cycle of an IC engine involves various forms of energy losses and deviations from ideal behavior.
3. What are the key assumptions made in the ideal cycle of an IC engine?
Ans. Some key assumptions made in the ideal cycle of an IC engine include: constant specific heats, no energy losses, ideal gas behavior, frictionless processes, and perfect mixing during combustion.
4. How is the efficiency of an IC engine calculated using the ideal cycle?
Ans. The efficiency of an IC engine can be calculated using the ideal cycle by comparing the actual work output of the engine to the work input required for the ideal cycle. The efficiency is given by the ratio of the actual work output to the ideal work input.
5. What are the limitations of using the ideal cycle in predicting the performance of an IC engine?
Ans. The ideal cycle makes several simplifying assumptions that do not hold true in real-world engine operation, such as neglecting energy losses, friction, and non-ideal behavior of gases. As a result, the ideal cycle may not accurately predict the performance of an actual IC engine.
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