Motor Quiz 2/29

Question 1

How many phase is a DC motor?

Answer 1

Single

Question 2

An ac motor is or can be how many phases?

Answer 2

Single phase or 3 phase

Question 3

What part of a DC motor rotates

Answer 3

The Armature

Question 4

What part of a DC motor is stationary?

Answer 4

Stator (same for AC motor)

Question 5

What is the rotating part of an AC motor?

Answer 5

Rotor

Question 6

What is the part of a DC motor that the brushes ride on?

Answer 6

Commutator

Question 7

What are the 2 main types of AC motors?

Answer 7

Induction and synchronous

Question 8

Do DC motors require more maintenance than AC motors?

Answer 8

Yes

Question 9

What is the wearable part of a DC motor?

Answer 9

Brushes

Question 10

What are the 2 main types of DC motors?

Answer 10

Brushed and brushless

Question 11

How is speed controlled in an AC motor?

Answer 11

VFD (a variable frequency drive)

Question 12

What’s the only way an AC motors speed can be controlled?

Answer 12

Through its frequency

Question 13

How do you change the direction of any DC motor?

Answer 13

Change the polarity. A1 and A2 (positive and negative)