Transformer Final

Question 1

A conventional transformer

Answer 1

Uses an external fuse device that protects it from fault current

Question 2

What statement about transformers is true?

Answer 2

A CSP is internally protected by a current limiting fuse

Question 3

The primary windings have?

Answer 3

Smaller size wire then the secondary

Question 4

A B C and D refer to?

Answer 4

The ends of the secondary windings where they are attached to low voltage terminals

Question 5

What does non-PCB refer to?

Answer 5

The lack of harmful substances in newer insulating fluid

Question 6

If the primary voltage coil ratings of the transformer match the phase to ground voltage of the system then connect?

Answer 6

WYE

Question 7

If the transformer only has one number for the primary voltage then?

Answer 7

Connect Delta only

Question 8

Which of these voltages on the work order require AC/BD

Answer 8

120/208

Question 9

Which of these statements about using underground transformers is true?

Answer 9

Remove the grounding strap from x2

Question 10

Which kind of secondary service voltage requires the WYE point of the primary to be floated?

Answer 10

WYE

Question 11

In a WYE-WYE bank which of the following would be a typical HL-HL voltage?

Answer 11

208,416,480

Question 12

The comparison of turns between windings is known as?

Answer 12

Turns ratio

Question 13

How do you identify an additive transformer?

Answer 13

X1 bushing is on the right

Question 14

How do you identify a subtractive transformer?

Answer 14

X1 bushing is on the left

Question 15

I

Question 16

Always verify what with an improved meter before connecting the load

Answer 16

Secondary voltage