multiple choice question A system executes a power cycle while receiving 1000 Btu by heat transfer at a temperature of 900°R and discharging 700 Btu by heat transfer at a temperature of 540°R If σ...

multiple choice question

A system executes a power cycle while receiving 1000 Btu by heat transfer at a temperature of 900°R and discharging 700 Btu by heat transfer at a temperature of 540°R

If σ cycle has a negative value, the cycle is:

a. impossible

b. irreversible

c. internally reversible