3. a 115-v, 60-hz, 3-phase y-connected, 6-pole induction motor has an equivalent tcircuit consisting of stator impedance of (0.07 +j0.3) ω and an equivalent rotor impedance at standstill of (0.08 +j0.3) ω. magnetizing branch has g0 = 0.022 mho, and b0 = 0.158 mho. assume a slip of 2%.

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?