The compression ratio and the cut-off ratio of a particular diesel engine which is running on a four-stroke cycle has a value of 11 and 3 respectively. It also has a heat rate of 12,345.6 kJ/kWh brake and the value of k is given at 1.32. Provided the following data, what are the values of the cycle efficiency, brake thermal efficiency, and brake engine efficiency?

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Lubricants

Lubricant can be expressed as the substance that is applied among surfaces to control the wear and tear and improve performance. Lubricants play an essential part in the safety of machinery components like gears, shaft, linkage, cam, clutches, and many others. The quantities which affect the amount of lubricant are temperature, surrounding conditions, speed of the components, and many more.