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An a.c. tachometer is just a ________with one phase excited from the carrier frequency. (A) two-phase A.C. servomotor (B) two-phase induction motor (C) A.C. operated universal motor (D) hybrid stepper motor.

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An a.c. tachometer is just a ________with one phase excited from the carrier
frequency.
(A) two-phase A.C. servomotor (B) two-phase induction motor
(C) A.C. operated universal motor (D) hybrid stepper motor.
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Ans: D
This is a special purpose machine whose stator coil can be energized by electronically
switched current.
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