For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then,

For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then, Correct Answer X/R is small but L/D is large

Small X/R gives linear speed torque characteristic. Large L/D gives less inertia and good acceleration characteristic.
Bissoy MCQ

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