This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In a synchronous AC motor, the speed of the motor is controlled by changing the ________ in the ... (Read 118 times)

colton

  • Hero Member
  • *****
  • Posts: 627
on: Jun 23, 2018
In a synchronous AC motor, the speed of the motor is controlled by changing the ________ in the stator.
 
  A) Pulse width B) Voltage C) Frequency D) Temperature

Question 2

A PTC circuit protector prevents excessive current flow in a circuit by __________.
 
  A) Grounding the current B) Changing to a very high resistance
  C) Opening a set of contacts D) Burning open


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

strudel15

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jun 23, 2018
Answer to Question 1

C

Answer to Question 2

B


colton

  • Member
  • Posts: 627
Reply 2 on: Jun 23, 2018
Great answer, keep it coming :)

yeungji

  • Member
  • Posts: 319
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Gross and fine motor development Gross and fine motor development
Major Motor Pathways Major Motor Pathways
Changing Patterns of Climate:Hurricanes and the Atlantic Multidecadal Oscillation Changing Patterns of Climate:Hurricanes and the Atlantic Multidecadal Oscillation
Changing Orientation of a Comet’s Tail as it Orbits the Sun Changing Orientation of a Comet’s Tail as it Orbits the Sun
A bell-shaped, or “normal,” curve shows the distribution of phenotypes for traits controlled by ... A bell-shaped, or “normal,” curve shows the distribution of phenotypes for traits controlled by ...
Comparing uncontrolled and controlled energy release. Comparing uncontrolled and controlled energy release.
Video: Types of Burns

For a complete list of videos, visit our video library