Final answer:
This physics question pertains to the characteristics and operation of a synchronous motor running at certain conditions with negligible ohmic losses.
Step-by-step explanation:
The question at hand involves a synchronous motor, which is a type of AC motor that operates at synchronous speed with the applied electrical frequency. The problem specifies the motor characteristics including power (250 hp), voltage (2300 V), frequency (60 Hz), and synchronous reactance (11 ohms per phase), and it asks for analysis when the motor operates at a given power angle and power output with negligible ohmic losses.
Omitting ohmic losses means that the resistive components of power consumption are considered to be insignificant, so the analysis will focus on the reactive and real power components as well as electromagnetic phenomena such as back emf and power factor. Such problems typically require applying principles of electrical engineering, particularly involving electric circuits and electromagnetic theory, to solve for quantities like current, voltage, power, and emf using equations specific to three-phase power systems and synchronous machines.