I need help with all questions please!$ 1. In a DC servo motor system, the tachometer feeds back a voltage that’s propor

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I need help with all questions please!$
1. 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 CPU in the main controller B. The interpolator card
C. The driver D. The axis logic card
2. A bipolar stepper motor has how many wire leads exiting from
the motor? A. 4 B. 8 C. 6 D. 2
3. The type of transistor configuration that’s used with a DC
servo motor is the A. negative-logic configuration. B. totem pole
configuration. C. emitter-follower configuration. D. H-bridge
configuration.
4. The type of sensors that are used on most simple brushless
motors to identify motor rotor position are the A. field-effect
sensors. B. capacitive sensor. C. hall-effect sensors. D.
optical-range sensors.
5. A control system that doesn’t return position or velocity
information from the motor back to the control system is called
a/an A. open-loop system. B. differential system. C. directional
system. D. translated position system.
6. If an open-loop stepper motor system is mispositioning, the
first thing you should do is to A. detune the ACCEL, DECEL, and MAX
potentiometers. B. replace the axis logic card. C. increase the
motor’s current. D. replace the motor.
7. The type of motor that’s used with an older indexer
controller is the A. DC servo motor. B. stepper motor. C. brushless
motor. D. three-phase stepper motor.
8. A type of lead screw that has squared-off threads is the A.
Cross screw. B. Evans screw. C. Thomas screw. D. Acme screw.
9. An inverter can be programmed to stop an AC motor quickly by
enabling A. a reverse pulse action. B. an internal brake. C. DC
voltage injection to the motor. D. a stationary AC waveform.
10. If rods are used to support a precision movement such as a
positioning table, the table will ride on the rods on A. brass
alloy nuts. B. gibs. C. a lead screw. D. ball bushings.
11. A scaling or header plug is used on some brushless motor
drive systems to A. divide the output pulse train. B. connect the
front panel indicator lights to the drive. C. connect the
tachometer to the drive. D. set the current limit of the drive.
12. 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. resolver. D.
alternator.
13. The type of stepper motor that has a pair of center-tapped
windings is the A. unipolar stepper motor. B. reactive stepper
motor. C. center-biased stepper motor. D. closed-loop stepper
motor.
14. The maximum number of lines of resolution of an encoder
that’s used with a three-phase stepper motor is A. 10,000. B.
20,000. C. 5000. D. 15,000.
15. The easiest place to install an ammeter into a stepper motor
driver/motor circuit for system diagnostics is to A. connect the
meter across the center tap and phase leads of the motor. B. remove
a fuse and place the meter leads across the fuse clips. C. attach
the meter in series with the driver’s power supply lead. D.
disconnect a motor lead and attach the meter in series with that
lead.
16. An encoder is being used instead of a tachometer in a DC
servo system. This system of speed control is called A. bit
counting. B. dual-connection feedback. C. dual-purpose feedback. D.
open-loop feedback.
17. The typical switching frequency of a brushless servo motor
driver is A. 10 kHz. B. 25 kHz. C. 15 kHz. D. 5 kHz.
18. The output terminals of most servo motor systems are marked
with the letters A. U, V, and W. B. C, D, and E. C. X, Y, and Z. D.
T, Q, and R.
19. You’re powering up a new motor in a brushless motor control
system. After moving the shaft of the motor lightly left to right,
the motor reverses direction and runs away. What’s the problem? A.
Power transistor failure B. Reversed hall-effect sensor C. Wrong
motor type D. Reversed tachometer
20. A servo system is oscillating at standstill. This is an
indication that A. the following error limit has been exceeded. B.
a motor winding is open. C. the system gain is too high. D. a
driver fuse is blown.
21. The S functions of an industrial controller are normally
used to control the A. tooling selection. B. coolant pump and other
motors. C. software delays. D. spindle speed.
22. What type of waveform uses a primary signal with no
harmonics? A. Triangle B. Sine C. Sawtooth D. Square
23. What type of circuits are present on an axis logic card for
a stepper motor system and are used to accelerate and decelerate a
motor? A. Bias circuits B. Ramp circuits C. Timing circuits D. Main
oscillator circuits
24. You’re looking at a tachometer feedback signal on an
oscilloscope. The waveform takes a long time to go to zero volts.
This means that the system is A. overdampened. B. at high speed. C.
reversing direction. D. critically dampened.
25. A 200 step-per-rotation stepper motor is attached to a table
with a five-pitch lead screw. How many turns of the motor are
required to move the table two inches? A. 2 B. 10 C. 5 D. 4