207

Card Set Information

Author:
JNW4
ID:
229977
Filename:
207
Updated:
2013-08-14 10:09:05
Tags:
MNAP
Folders:

Description:
Operating and Maintaining Single-Phase Motors
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  1. In most repulsion start induction run motors.  Shifting the
    Position of the brushes reverses the direction of rotation.
  2. An open winding in a split phase motor is indicated by an ohm reading of?
    Infinity
  3. In four pole motors the polls of the starting winding are spaced_________electrical degrees from the main stater polls.
    90
  4. In a repulsion motor.  The rotor is called an_____.
    Armature
  5. In order for a voltage motor to run on 120v instead of 240v.  It's running windings must be connected in________.
    Parallel
  6. Hysteresis motors run on frequencies ranging from__________.
    25-2000Hz
  7. Reversing the direction of an instantly reversible motor, even when it is operating at full speed is accomplished with a____________.
    Relay
  8. If a circuit breaker trips when you start a capacitor motor.  The cause may be?
    A faulty centrifugal switch.
  9. Appedine generator has______sets of brushes on the commutator.
    Two
  10. A closed loop servo system.  The control field always leads/lags the fixed field by_____degrees.
    90

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