Our orders are delivered strictly on time without delay
Paper Formatting
Double or single-spaced
1-inch margin
12 Font Arial or Times New Roman
300 words per page
No Lateness!
Our orders are delivered strictly on time without delay
Our Guarantees
Free Unlimited revisions
Guaranteed Privacy
Money Return guarantee
Plagiarism Free Writing
Synchronous induction motors
(i) A star-connected, three-phase synchronous induction motor takes a current of 10 amps from a 415 volt supply at unity power factor when supplying a steady load. If the synchronous reactance is 5 ohms/phase and the resistance is negligible, draw the phasor diagram and calculate the value of the generated emf and the load angle. (ii) If the excitation is reduced by 10% and, as a consequence the generated e.m.f. is reduced by 10%, calculate the new value of the generated e.m.f E, the stator current, the power factor and the load angle, assuming that the load does not change. (iii) Comment very briefly on the effect that reducing the excitation has on the power factor, stator current and the load angle.