Consider a thermal machine that follows the Otto cycle. It is known that the efficiency of that machine can be improved. From the following statements: 1. It can be improved and this occurs if the value of efficiency approaches 1. 2. Efficiency can be improved by decreasing the compression ratio. 3. Higher efficiency can be obtained by increasing the temperature difference at which the machine operates. 4. Higher efficiency can be obtained than that of a Carnot machine operating at the same minimum and maximum temperatures. Which are correct? a) 1 and 2 b) 1 and 4 c) 1 and 3 dl 2 and A

Consider a thermal machine that follows the Otto cycle. It is known that the efficiency of that machine can be improved. From the following statements: 1. It can be improved and this occurs if the value of efficiency approaches 1. 2. Efficiency can be improved by decreasing the compression ratio. 3. Higher efficiency can be obtained by increasing the temperature difference at which the machine operates. 4. Higher efficiency can be obtained than that of a Carnot machine operating at the same minimum and maximum temperatures. Which are correct? a) 1 and 2 b) 1 and 4 c) 1 and 3 dl 2 and A

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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