Week 4

Question 1

Which device can increase or decrease the input voltage by 10%?

Answer 1

Voltage regulator

Question 2

Capacitors introduce ? which counteracts the negative effects of inductive reactance.

Answer 2

Capacitive reactance

Question 3

In a circuit that is 7,200/12,470 volts, which number represents the phase to neutral voltage?

Answer 3

7,200

Question 4

Provide two examples of protective equipment.

Answer 4

Fused cut-outs
Reclosers
Sectionalizers
Surge arresters

Question 5

What portion of the system operates at 120-240, and typically runs from pole to pole, or padmount to pedestal?

Answer 5

Secondary

Question 6

In most underground systems, the transformers are designed so that they can be fed from two directions.
What type of design is this?

Answer 6

Loop

Question 7

You see a power line with one phase and a neutral conductor. What type of circuit is this?

Answer 7

WYE – tap line

Question 8

How many phases are needed for a single phase transformer on a Delta circuit?

Answer 8

Two

Question 9

What term is synonymous with “main” line?

Answer 9

Feeder main

Question 10

Which of the following typically has the larger sized conductors? Main line or tap line?

Answer 10

Main line