A 60-Hz 20-kVA 8000/240-Vrms transformer has the following equivalent-circuit parameters: Primary resistance R 1 = 15Ω Secondary resistance R 2 = 0.02Ω Primary leakage reactance X 1 = 120Ω Secondary leakage reactance X 2= 0.15 Ω The magnetizing reactance ( X m ) and core-loss resistance ( R C ) are negligible and can be ignored. The transformer is supplying rated load ( i.e. 20-kVA) with a lagging power factor of 0.8. The output voltage phasor is V o=240 ∠0°. Find (1) Active output power, Pout = _____ W (2) Primary current |I 1 | =______A (3) The angle of primary current is ______ ° (4) Input voltage |V in | =______V (5) The angle of input voltage is ______ ° (6)Percentage voltage regulation VR =______ (decimal representation) (7) Input active power, P in = _____ W (8) Efficiency of the transformer = _____ (decimal representation).