A 440 V, 3-phase, delta connected cylindrical synchronous motor with synchronous reactance of Xsm=2Ω is connected to a turbo-generator with Xsg=3Ω through transmission line of reactance Xtr=1.5Ω. If its field current is adjusted to give an excitation voltage of 12 Kv, then Calculate: (a) Calculate the maximum magnitude of the resultant flux emf? (b) Calculate the magnitude of armature current and its P.F? (c) Calculate the magnitude of the armature current in phase with stator voltage?
A 440 V, 3-phase, delta connected cylindrical synchronous motor with synchronous reactance of Xsm=2Ω is connected to a turbo-generator with Xsg=3Ω through transmission line of reactance Xtr=1.5Ω. If its field current is adjusted to give an
excitation voltage of 12 Kv, then Calculate:
(a) Calculate the maximum magnitude of the resultant flux emf?
(b) Calculate the magnitude of armature current and its P.F?
(c) Calculate the magnitude of the armature current in phase with stator voltage?
(d) Calculate the maximum power output from the motor?
(e) Compute the excitation voltage Ef on a per unit basis, when the generator is delivering rated KVA at rated voltagee and at power factor of (i) 0.8 lagging and (ii)0.8 leading?
(f) Draw the complete phasor diagram and show that armature current leading the terminal voltage?
Step by step
Solved in 9 steps with 4 images
