DC Motors

Question 1

DC motors take what type of current?

Answer 1

Direct current

Question 2

DC travels in what direction?

Answer 2

One direction which is determined by the polarity

Question 3

The 2 broad categories of DC motors

Answer 3

Brushed and Brushless

Question 4

A motor that has a permanent magnet stator?

Answer 4

Permanent magnet

Question 5

The rotating portion of a DC motor is called?

Answer 5

The armature

Question 6

3 main types of wound field motors?

Answer 6

Series
Shunt
Compound

Question 7

The part of the motor that the brushes ride on?

Answer 7

Commutator

Question 8

Brushless motors typically can range up to what HP?

Answer 8

20 HP at 1800 RPM

Question 9

Permanent magnet motors range from what horsepower?

Answer 9

.75 to 5 HP

Question 10

Shunt in electrical means?

Answer 10

Parallel

Question 11

What do we control on a DC motor to regulate speed?

Answer 11

Current

Question 12

Series motors are known for high what?

Answer 12

Torque

Question 13

Series motors lack?

Answer 13

Speed control(prone to run away)

Question 14

Shunt windings are wired where in relation to the armature?

Answer 14

Parallel

Question 15

Shunt motors are used in applications where what is important?

Answer 15

Speed control

Question 16

The main problem with compound motors is what?

Answer 16

High cost