A salient pole generator has direct axis reactance Xd = 1.0 per unit and quadrature axis reactance Xq = 0.7 per unit. The generator armature current Ia = 1.4-20 per unit. The generator terminal voltage is Vt = 1.00 per unit. a. (10 points) Find , the angle of the open circuit voltage Eg.

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.