6) The type of stepper motor that has a pair of center-tapped winding is the
A) Closed-loop stepper motor
B) Reactive stepper motor
C) center-biased stepper motor
D) unipolar stepper motor
7) The Typical switching frequency of a brushless servo motor driver is
A) 25kHz B) 5kHz C) 10kHz
D) 15kHz
8) In a DC servo motor system, the tachometer feeds back a voltage that's proportional to motor speed. Where does this voltage go to?
A) The Driver
B) The axis logic card
C) The interpolator card
D) The CPU in the main controller
9) A type of feedback device that uses a rotor and senses the position of the motor by means of sine and cosine waveforms is called a/an
A) Encoder
B) Tachometer
C) Alternator
D) Resolver
10) The maximum number of lines of resolution of an encoder that's used with a three-phase stepper motor is
A) 10,000
B) 5,000
C) 15,000
D) 20,000