Which of these is not a characteristic of synchronous motors? select one: 1. speed is constant 2. used in load applications requiring constant speed with infrequent starts and stops t. 3. is simpler in construction than a squirrel cage motor 4. has salient pole windings with the same number of poles as the stator

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.