A 240-V, star connected, three phase, synchronous motor has a synchronous reactance of 4-ohm/phase and negligible armature winding reactance. At a certain load the motor takes 7.20-kW at 0.866 pf lag. Determine: (1)The phase voltage (Va): M (ii) The per-phase complex current (la -deg [A] (iii) The per-phase complex induced excitation voltage (Ea -deg
A 240-V, star connected, three phase, synchronous motor has a synchronous reactance of 4-ohm/phase and negligible armature winding reactance. At a certain load the motor takes 7.20-kW at 0.866 pf lag. Determine:
(1)The phase voltage (Va): M
(ii) The per-phase complex current (la -deg [A]
(iii) The per-phase complex induced excitation voltage (Ea -deg
[V] If the power developed by the motor remains the same while the excitation voltage is decreased by 10-% by dropping the field excitation, determine:
(iv)The new complex induced excitation voltage (Ea -deg [V]
(v)The new per-phase complex current (la [A]
(vi) The new power factor (pf@ lag/lead): -deg
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Please all subparts in short like it definitely don't reject in shorts please i will dislike for first three subparts.
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