Transformer NLC Texas Edison Team 2 Quiz 04/16/2024

This type of testing is used in troubleshooting and preventative maintenance programs:

• Polarity Test

• Turns Ratio Test

• Insulation Test

• Continuity Test

Ensure that the impedances are within ___ if banking or paralleling:

• 3%

• 10%

• 7.5%

• 8%

The direction of current flow in a transformer is determined by:

• Voltage

• Turns Ratio

• Impedance

• Polarity

TRUE OR FALSE: The dual-voltage switch should only be operated when the transformer is de-energized.

• True

• False

TRUE OR FALSE: The transformer schematic shows the primary and secondary coils and their relationship.

• True

• False

The insulation tester is sometimes referred to as a:

• Megger

• Phaser

• Insulation Tester

• Millers Hairline

Each tap changer lowers or raises the secondary voltage by (Select all that apply):

• 10 Volts

• 7.5%

• 2.5%

• 4.5%

Where is the tap changing handle located?

• On the inside & outside the tank

• On the primary coil

• On the secondary block

• On the meter

7200 System Voltage:

• Phase to Phase

• Single Phase Line

• Delta

• Both

A schematic shows the _ coils and their relationship

• Core and copper

• High voltage and low voltage

• Primary and secondary

• Induction and Copper