Thermal efficiency

  A reversible power cycle receives energy Q. by heat transfer from a hot reservoir A TH and rejects energy Qc by heat transfer to a cold reservoir at Tc. (i) If TH = 1600 K and Tc = 400 K, what is the thermal efficiency? (ii) If q =40% and To = 727°C, what is 11, in °C? (Watch "Carnot Engine Example-1" for both) (iii) If TH. 500°C, To = 20°C, and Wqd. = 1000 kJ, what are QH and QC, each in kJ? (Watch "Carnot Engine Example-2 or 3")