A heat engine constructed with one mole of an ideal monatomic gas operates on a re- versible cycle a → b → c → d → a. The system goes from a → b in a ischoric process from temperature T¡ to T2 < T1. The system is then compressed in an isothermal process b → c with a compression ratio of 6. A second isochoric process c → d takes the system back to temperature T after which a final isothermal process d → a returns the system to its original state. i) By applying the First Law of Thermodynamics, calculate the heat flows, including signs, in each leg of the cycle in terms of T and T2. ii) Calculate the efficiency of the heat engine nɛ and compare it to the efficiency of a Carnot engine operating between T and T2. iii) Explain the result in ii) using Carnot's Theorem.

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Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.