Deck 9: Magnetic Motor Starters

Question 1

The control circuit is present on both the contactor unit and the overload unit.

Answer 1

True

Question 2

Every electric motor must have a(n) ____.

A)contactor
B)controller
C)overload unit
D)disposal

Answer 2

B

Question 3

Combination motor starters are found primarily in large commercial and industrial installations.

Answer 3

False

Question 4

____ control contacts are not provided to control auxiliary equipment, because manual motor starters cannot use them.

A)Switch
B)Auxiliary
C)Starter
D)Three-pole

Question 5

Motor starters are the combination of a contactor unit and an overload unit, connected to function as a single unit.

Question 6

In addition to the MCC bucket and the combination types, motor starters can be found as _______________ components.

Question 7

The most common platform for electric motor starters in large commercial or industrial applications is the ____.

A)motor control location
B)motor control setting
C)motor control panel
D)motor control center

Question 8

The _______________ motor starter combines all of the necessary control and protection components in one cabinet.

Question 9

Describe a manual motor starter.

Question 10

Motor Control Centers are found in smaller commercial installations.

Question 11

Manual motor starters are not capable of ____ operation because the contacts are mechanically linked to the start and stop buttons, so the operator must control the motor from the starter location.

A)equipment
B)magnetic
C)remote control
D)electrical

Question 12

The power circuit is present on both the contactor unit and the overload unit.

Question 13

A manual motor starter is a device where the _______________ contacts that actually energize the motor load are manually operated by hand.

Question 14

Manual motor starters provide protection from automatic restart when power is restored after a power outage.

Question 15

The ____ is designed to measure the running load current of the motor, and open the contactor unit to stop the motor in the event the motor draws current levels that could cause damage from excessive heat.

A)overload unit
B)motor starter
C)magnetic starter
D)manual starter

Question 16

The switch contacts are a mechanical linkage function, and they will remain closed in the case of ____.

A)a power failure
B)a restart
C)a reconnect
D)a low voltage

Question 17

Manual motor starters are also capable of remote control operation.

Question 18

Manual motor starters are limited to smaller horsepower motors.

Question 19

Manual motor starters are limited to small, normally fractional horsepower motors, and it would be rare to find them controlling motors greater than _______________ horsepower.

Question 20

The stator unit is the component that directly energizes and de-energizes the motor load.

Question 21

Describe two of the four drawbacks in using manual motor starters rather than magnetic motor starters.