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The ____________________ starter is often referred to as the "simple" type. This starter has one set of contacts that close when the starter coil is energized. When the contacts close, the motor is connected directly to the line voltage.

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across-the...

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____________________ overload relays are used when the control is located in a varying ambient temperature and the motor that it protects is in a constant ambient temperature.

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The basic principle of the ____ starter is to apply a percentage of the total voltage to start.


A) locked rotor
B) reduced-voltage
C) jogging
D) stepping

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The motor starter is similar to the contactor in design and operation. The important difference is the ____.


A) convenience of remote control on one motor or multiple motors
B) use of overload relays on the motor starter
C) rated horsepower and rated voltage
D) closing of contacts that connect the motor to the source of electrical power

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In the ____ starter, there are two starters of equal size for a given horsepower motor application.


A) manual motor
B) magnetic motor
C) reversing
D) across-the-line (full-voltage)

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Manual motor starters are used extensively on industrial machines.

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In the reversing starter, both mechanical and electrical interlocks are used to prevent both starters from closing their line contacts at the same time.

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True

One advantage of the ____ starter is the smooth acceleration.


A) autotransformer
B) primary resistor-type
C) wye- (or star) delta
D) part winding

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B

In thermal protected overload relays, the thermal element is connected mechanically to a normally open contact.

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Solid-state reduced-voltage controllers provide smooth, stepless acceleration of a motor through the use of silicon-controlled _____________________.

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rectifiers

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