LAP Year 2 Week 2 Monday

Which of the nameplate ratings matches the connections?

Which voltage is the primary coil rating?

It is good practice to check the ______ with an approved multimeter prior to adding load.

• voltage

• current

• resistance

• frequency

Engineers can choose from ____ different primary voltage designations when purchasing transformers.

• 3

• 2

• 4

• 5

The H1 is connected to the phase and H2 is connected to the neutral. True or False?

• True

• False

On a tap changer, each tap raises and lowers the secondary voltage by 2.5% or 5.4%. True or False?

• True

• False

A transformer with 2 bushings can be hooked up phase to ground. True or False?

• True

• False

The H1 is connected to a phase and H2 is connected to a different phase.

• True

• False

A transformer that can accept two different primary voltages by operating a switch is a ____________.

• Dual voltage transformer

• Single voltage transformer

• Variable transformer

• Step-up transformer

Which transformer nameplate rating will allow the connection to be made on a system voltage of 7200/12470?

• 7200 V

• 12470 V

• 7200/12470 V

• None of the above