An alternator, with synchronous reactance of 0.8 pv is connected to an IBB at rated voltage. With its excitation emf adjusted to 1.3 pv, the alternator delivers an output of 0.5 pv. The load angle is __________

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Efficiency and Regulation topics include: Power flow through an inductive impedance, losses and efficiency of synchronous machines. In electrical engineering, voltage regulation is a measure of change in the voltage magnitude between the sending and receiving end of a component. Regulation is the change in voltage that occurs when a load is connected across a power supply, caused by internal resistance or impedance.  Electrical machines are designed to have an efficiency of over 90%. Large electrical machines can have an efficiency of 95–99%. Most electric motors are designed to run at... Show more

An alternator, with synchronous reactance of 0.8 pv is connected to an IBB at rated voltage. With its excitation emf adjusted to 1.3 pv, the alternator delivers an output of 0.5 pv. The load angle is __________