Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

3E151 Set 1 V3

QuestionAnswer
What is the main advantage of the melting-alloy type overload? Amperage rating always stays the same
What does variable frequency drive (VFD) give an engineer? Creates customer comfort and efficiency
Where would a feedback control source come from for a VFD? Internal or External
Always do what to a VFD before attempting maintenance? Verify unit is de-energized
On a magnetic line starter the control circuit consists of what items? Holding coil, Auxiliary contacts, and overload relay reset contacts
What terminals are used to connect a three-phase motor to a magnetic line starter? T1, T2, T3
How many sets of main contacts does a single phase magnetic line starter have? 2
How are the contacts operated in a float switch? Lever and float assembly
What is the thermostat sensitive to in heating and cooling systems? Temperature
The hand, off, automatic switch is? a three position switch
A relay may be defined as? An electromagnetic switch
What is the function of a relay? Open and close an electrical circuit
Normally speaking when comparing the load circuit to the control circuit in a relay The load circuit is shorter and made of a heavier conductor
The power Supply is attached to what part of the motor? Stator
Where is electrical energy converted into mechanical energy in an electric motor? Rotor
What is the purpose of the skew effect on a squirrel cage motor? Increases the torque
Current Flow in the stator is transferred to the rotor of a three phase motor... by magnetic induction
What is one way to connect a three phase motor for 440 volts? Wye, Series
Created by: a1cme
Popular Engineering sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards