Test 3-1 Old

Question 1

A _____ is a skilled tradesman who has completed a prescribed apprenticeship in a particular trade.

Answer 1

Journeyman

Question 2

As an Electrical Worker apprentice, you began a training period that embraced two basic concepts, the _____ of our trade.

Answer 2

Why and the how

Question 3

The “how” of your trade is learned _____.

Answer 3

On the job.

Question 4

The development of personal pride requires _____ and dedication

Answer 4

Effort.

Question 5

The _____ curriculum must be used in order for an apprentice to qualify for ACE/NJATC college credit recommendation.

Answer 5

IBEW

Question 6

The industry that employs the largest number of workers in the United States is the _______ industry.

Answer 6

Construction

Question 7

In recent years, the ____ has provided an essential and stabilizing function for the construction industry.

Answer 7

Union referral system.

Question 8

The IBEW acronym COMET stand for _____.

Answer 8

Construction Organizing Membership Employee Training

Question 9

Issuing press releases for charitable work, fund raising , and monetary donations can enhance ____ at the local level.

Answer 9

Our public image.

Question 10

The use of a cell phone on the job should be kept to business only, and personal use should be kept to _____

Answer 10

Off the clock

Question 11

Working ____ increases productivity because inspection help prevent major breakdowns in equipment and following safety procedures help complete a job on time.

Answer 11

Safely

Question 12

Productivity increases when everyone on the crew has a sense of contribution to the final project through ____.

Answer 12

Job briefings

Question 13

to provide real time information, many companies are installing ___ units on all or part of their fleets

Answer 13

GPS

Question 14

They delta system is also called a ____ system.

Answer 14

Three-wire

Question 15

In a ___ system, the coil voltage and the phase-to-phase voltage are the same.

Answer 15

Delta

Question 16

Current flow in a wye circuit is about _____ than in an equivalent delta circuit.

Answer 16

58%

Question 17

Electricity can be transmitted more efficient over long distances by using ____.

Answer 17

Higher voltage

Question 18

when voltages and current reach their maximum and zero values at the same time they are said to be _____.

Answer 18

In phase

Question 19

The peak value of A is equal to _____ RMS value or the square root of 2.

Answer 19

1.414

Question 20

In an AC circuit, the RMS value is e_____ times the peak value.

Answer 20

0.070

Question 21

Impedance is measured in____

Answer 21

Ohms

Question 22

Capacitive reactance is measured in ___.

Answer 22

Ohms

Question 23

The product of the total voltage and the total current in an AC circuit is _____ power.

Answer 23

Apparent

Question 24

When a conductor moves through the magnetic line of flux, the induced voltage will cause a(n) _____ on the electrons.

Answer 24

Electromotive force (EMF)

Question 25

A coil of wire wrapped around a core is called a(n)

Answer 25

Inductor

Question 26

The ability to induce a voltage into itself is called _____.

Answer 26

Self-induction

Question 27

Capacitors store ____ and release energy opposing the reactive energy caused by inductor.

Answer 27

KVARs

Question 28

Three factors affect the capacitance of capacitor: the area of the plates, the distance between the plates, and_____.

Answer 28

the type of dielectric.

Question 29

A transformer is an example of a(n) ___ that would cause low power factor.

Answer 29

inductive.

Question 30

When capacitors are installed ___ is introduced into the circuit, which ne the inductive reactance.

Answer 30

Capacitive reactance

Question 31

In a capacitor, the ____ reaches its the voltage reaches its peak.

Answer 31

Current

Question 32

Large capacitors have ____ to all energization or de-energization

Answer 32

Oil switches

Question 33

generated in the ___ is of alternating current(AC)

Answer 33

95%

Question 34

Approximately all the electricity generated in the United States is of the AC type and at _______ Hertz(cycles).

Answer 34

60

Question 35

Systems of hertz can be changed to 50 hertz system by using _____ to accommodate customer needs.

Answer 35

Generators

Question 36

In the delta system, only ____ voltage(s) is/are available.

Answer 36

One

Question 37

If two voltage cross the baseline at the same time going in opposite directions yet have the same frequency, they are said to be ____ out of phase.

Answer 37

180 degrees

Question 38

On a closed wye-delta bank, the neutral bus is sometimes referred to as the _____ and should always be insulated from ground

Answer 38

Floating neutral

Question 39

In the open delta connection,the corner capacity of the two transformers is on their total nameplate capacity.

Answer 39

87%

Question 40

What type of bank configuration can o transformers be used in

Answer 40

None

Question 41

The term ____ is used in electrical work to the earth as zero potential.

Answer 41

ground

Question 42

To ____ a transformer means to connect neutral to earth

Answer 42

Ground

Question 43

A good safe practice, a transformer should be ___ before working around

Answer 43

Grounded

Question 44

When dealing with transformer bank ___ basic types of connections that co made; one of them is the wye wye connection

Answer 44

6

Question 45

The neutral bus on a closed wye-delta bank is sometimes referred to as the ____ and should always be insulated from ground.

Answer 45

Floating neutral

Question 46

Which of the following must be considered when banking transformers together to meet a customer's service needs?

Answer 46

``` II impedance value III KVA IV Primary Voltage VI Secondary Voltage V Polarity VI Secondary Voltage ```

Question 47

The basic rule for connecting three coils of a wye-connected transformer bank is ____.

Answer 47

like markings of each coil are connected to common point

Question 48

One of the fastest ways to determine which transformer in a bank needs to replaced is _____ and test transformers.

Answer 48

To isolate

Question 49

In the delta-connected bank,the voltage of the coils is____ voltage across

Answer 49

Equal t

Question 50

In order to gather data during a spe period on three-phase transformer _____ are performed

Answer 50

Load checks