How does heat engine convert thermal and chemical energy to mechanical energy?
A. With the help of steam
B. By converting the input energy into electrical energy which is then used to drive mechanical systems
C. By bringing a working substance from a higher state temperature to a lower state temperature
D. By converting the input electrical energy to mechanical energy
Answer:C
How does heat engine convert thermal and chemical energy to mechanical energy?
A. With the help of steam B. By converting the input energy into electrical energy which is then used to drive mechanical systems C. By bringing a working substance from a higher state temperature to a lower state temperature D. By converting the input electrical energy to mechanical energy