PASCO SE-8657 MOTOR ACCESSORY - Manual (Page 22)

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Motor Accessory 012-06247A
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(c) What does the split ring commutator do to explain the difference in results from those
with the dual slip rings?
(d) Which of the following describes the results? (a) AC (b) pulsating DC (c) steady DC
➂
Spin the armature several more times, more rapidly each time. Stop if this causes you to
exceed the range of the meter. (a) What is the effect of greater rotational speeds?
(b) This result may be explained in terms of the ideas discussed above. Try to explain the effect of
greater speeds.
➃
If you have a PASCO computer interface and Voltage Sensor, try this: (a) predict how a
voltage vs time graph would look if you put the dual slip rings down and spun the armature
rapidly and let it slow to a stop.
(b) What if the split rings were down?
(c) What if the split rings were down, but you spun it in the opposite direction.
(d) Test these predictions if the proper equipment is available.