As the load is applied to a synchronous motor, the motor takes more armature current because
Athe increased load has to take more current
Bthe rotor strengthens the rotating field casuing more motor current
Cthe back e.m.f. decreases causing an increase in motor current
Dthe rotor by shifting its phase backward causes motor to take more current
Correct answer
D. the rotor by shifting its phase backward causes motor to take more current
Explanation
The correct answer is the rotor by shifting its phase backward causes motor to take more current.