Gen Info
Delta or Wye
Connections
Math
Misc
100

What is used to cool down the transformer?

Dielectric Oil

100
Closing the delta permits more power to be supplied for the operation of three phase loads

True or False?

True 

100
What kind of connection is usually used for households?

Delta-Wye

100

What is phase multiplied by to get the line?

1.732 or the square root of 3

100
How must the high leg be identified by doing what?  

Tagging it or color coding it with orange wire 

200

What is the primary in a Delta-Wye connection?

Delta 

200

Does a normal Delta connection have a neutral? 

No

200

What kind of connection is almost never used?

Delta-Wye

200
With a turn ratio of 3:1 and a primary with 120 volts, how many colts does the secondary have?

40 volts

200

How many volts are measured across one leg of a 208 volt connection?

120 volts

300

What is the Zig-Zag connection primarily  used for ?

Grounding purposes 

300

What transformer type is almost always used as a primary?

Wye


300

What connection is used to establish a neutral point for grounding of fault currents 

Zig Zag connection

300

With a turns ratio of 3:1 and a primary with 5 Amps, how many amps does the secondary have?

15 amps

300

Primary leads are labeled with what letter? 

H

400

When making a T- connection, the main transformer is connected directly across the _________ 

Power line 

400

When using an open delta center tapped transformer, there is a  high leg. The high leg in it has the most ______

Amperage 

400

What kind of question has a neutral conductor across both transformers?

Wye-Wye

400

With a turns ratio of 5:1 and a primary with 1200 VA, how many VA does the secondary have?

1200 VA

400

Secondary connections are labeled with what letter?

X

500

Ripple is the pulsations of what? 

Voltage 

500

What format is used for a Zis-Zag connection?

Wye

500

What kind of connection is used to turn three way power into two way power?

Sgyat connection

500

With a turns ratio of 1:3, a primary with 120 volts, and 30 amps, what are the amps and volts of the secondary?

360 volts and 10 amps

500

What are zig zag connections used for?

To make grounding safer

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