temper c. Using an open feedwater heater d. Using a closed feedwater heater a III. Two reversible power cycles (A and B) and an irreversible power cycle (C) work between the same two thermal reservoirs. Cycle A includes 6 processes and cycle B includes only 3 processes. Which statement is correct for the efficiencies of these power 3 cycles? (3 points) a. 17A = 72 = ne b. 1 =18 > nc . 2 3 IV. d. No relation between the efficiencies of the cycles. The processes associated with air standard Bryton cycle are: (3 points) a. Two constant volume, two constant pressure b. Two constant pressure, two isentropic c. Two constant volume, two isentropic d. Two isothermal, two constant pressure V. In air-standard diesel cycle the combustion process is replaced by: a. Constant volume reversible heat addition. b. Constant pressure irreversible heat addition, c. Constant volume irreversible heat addition. d. Constant pressure reversible heat addition. VI. Which process in an ideal vapor-compression refrigeration cycle in NOT reversible a. Compression b. Heat addition c. Heat rejection d. Expansion