True/False
Indicate whether the
statement is true or false.
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1.
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In part winding starting, neither of the two windings is individually capable of
withstanding the starting current for more than a few seconds.
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2.
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Part winding starters provide closed transition starting.
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3.
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Delta connected dual voltage motors are acceptable for part winding
starting.
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4.
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When dual voltage motors are used, the motor must be operated on the high
voltage setting of the motor.
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5.
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Part winding starting is typically used for motors that supply the moving force
for centrifugal pumps, fans, and blowers.
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Completion
Complete each
statement.
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6.
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The method of starting in which only half the motor winding is used during
starting is called ____________________ starting.
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7.
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With part winding starting, the first winding will ____________________
rapidly if the second windings is not connected within a very short period of time.
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8.
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One advantage of part winding starters is that they provide
____________________ starting because the motor is never disconnected from the power line
during the starting time.
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9.
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Each winding in motors designed for part winding starting is individually
protected by ____________________ overload heaters.
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10.
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To help prevent damaging the first winding, some circuits contain a timer that
disconnects power to the motor if the second winding is not energized within a predetermined time.
This timer is often called a(n) ____________________.
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Short Answer
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11.
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Motors designed to be used for part winding starting contain two separate stator
windings. What are they?
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Figure 27-2 
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12.
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In the accompanying figure, why are both overload relays connected in
series?
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13.
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The thermal capacity of the stator windings greatly limits the length of
starting time for a part winding motor. How do you overcome this problem?
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14.
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The thermal capacity of the stator windings greatly limits the length of
starting time for a part winding motor. How can you help overcome this problem?
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15.
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What happens if the second winding is not connected to the power line within a
short period of time?
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