Car Repairman Question:
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The maximum pressure of air at the end of compression in diesel engines is about
a. 10 Kg/cm2
b. 100 Kg/cm2
c. 300 Kg/cm2
d. 30 Kg/cm2


d. 30 Kg/cm2

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The heat is added in the cycle at
a. Constant pressure
b. Constant volume
c. Approximately constant pressure and constant volume
As compression ratio in an engine goes up, the octane requirements of the fuel
a. Goes down
b. Goes up
c. Stay about the same