A 2400 / 240 V, 60-Hz transformer has the the high-side leakage impedance is (1:2+j 2:0) Ω, the low-side leakage impedance is (0.012 + j 0.02) Ω, and Xm at the high-side is 1800 Ω. Neglect Rhe. Calculate the input voltage if the output voltage is 240 V (rms) and supplying a load of 1:5 Ω at a power factor of 0.9 (lagging)

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.