Test In

Question 1

How would you set the regulator for paralleling inside the feed point ?

Answer 1

Set regulator to neutral and off control.

Question 2

In the first step of returning a voltage regulator to service, what is the position of the Power and Control switches?

Answer 2

Off

Question 3

When bypassing a control regulator, the control is set to ______ and off control.

Answer 3

Neutral

Question 4

What does it means when voltage regulators is set to Buck?

Answer 4

The voltage regulator provides a step down in voltage

Question 5

The system is 6930/12000 WYE 4-wire and the transformer 12000 GRD WYE/6930. How would this transformer be connected?

Answer 5

Phase to Neutral

Question 6

The system is 2400/4160 WYE 4-wire. The transformer is 2400/4160 WYE. How is the primary connected?

Answer 6

WYE

Question 7

A customer wants 120/208 volts , three-face, four-wire service. The overhead transformers are 120/240 volts. What bushing would be the common?

Answer 7

X2

Question 8

A customer wants 120/208 volts, three-face, four-wire service. Transformer are 120/240 volts. What is the secondary connection?

Answer 8

WYE

Question 9

To build a WYE, we wire the three windings together by ______ of the connections.

Answer 9

Matching the polarity.

Question 10

Which of the following rotations is the standard SCE face sequence?

Answer 10

BAC, CBA

Question 11

A vector is define as a means of expressing the _______ and the _______ of a quantity.

Answer 11

Magnitude , Angle.

Question 12

What are the three reasons that could cause an Automatic Recloser (AR) to open a ground relay target?
Select the three that apply.

Answer 12

•Bypass around AR
•Paralleling with another circuit
•Ground fault

Question 13

Which of the following statements best describes how RARs operate during Red flag warning situations

Answer 13

RARs are Blocked to prevent reclosing in SOB 322 areas.

Question 14

The function of the ground relay is to determine the circuit’s

Answer 14

Escaping current

Question 15

What are the three primary reasons Edison installs Automatic Reclosers (AR’s)?

Answer 15

•sectionalizing
•protection
•changing mode operation

Question 16

What is the primary function of a midpoint controlled switch?

Answer 16

To aid in sectionalizing the total circuit load to about 50%

Question 17

What components are required for each PE gear installation?
Select the three that applied

Answer 17

•Control mechanism
•Voltage sensing units
•Transfer mechanism

Question 18

An AC circuit has 120 volts and 10 ohms of impedance. What is the current on the circuit?

Answer 18

12 Amps

Question 19

A circuit has 17KVA with a power factor of 82.3% what is the KVAR?

Answer 19

9.7 KVAR

Question 20

Which of the following may occur if the secondary of a current transformer is opened while primary is in the current of the primary of the current transformer?
Select the two that applied

Answer 20

•High voltages across the opened secondary.
•Arcing could occur which could harm operator and cause equipment damage.

Question 21

On a CT meter panel, solid color wires with the white stipe are used for what?

Answer 21

Current Input.

Question 22

Which of the following transformers are needed for KWH meter to measure power?

Answer 22

Current and potential transformer

Question 23

What is used to shunt the CT before removing the meter in a CT panel

Answer 23

Test Switches

Question 24

What is the function of the Potential Transformer (PT)?

Answer 24

To provide a proportional output voltage for meter purposes

Question 25

What is the reason for performing high voltage testing when phasing conductor?

Answer 25

Ensures both lines are energized, and the tester is indicating properly.

Question 26

Which of the following best describes the operation of a ground bank when there’s no ground fault on the system?

Answer 26

The primary voltages are balance so there is no current flowing in the secondary

Question 27

How is the high side of a ground detector configured?

Answer 27

Three- single phase transformers connected WYE with WYE point grounded

Question 28

Which of the following are reasons for installing a ground bank? Select two that apply.

Answer 28

•Provides source of ground on an ungrounded Delta system. •Stabilized the neutral on a four-wire distribution circuit to protect customers from over voltage

Question 29

Which of the following best describes the time current characteristics of a fuse?

Answer 29

Arcing burns material surrounded the fuse and thus creates gases that blow out the arc and interrupt the fault current.

Question 30

How is the asymmetrical fault current determine?

Answer 30

Sum of the symmetrical current and the discharge current

Question 31

Which of the following are characteristics of an expulsion fuse compared to a current-limited fuse? Three that apply

Answer 31

•Relatively expensive •Expels hot gases, molten debris and by-products •Lower interior rating

Question 32

What is the primary function of a fuse in on electric circuit?

Answer 32

To interrupt the electric current flow in the circuit when the current goes above the predetermined range.