Step 7

Question 1

Define transformer

Answer 1

An electrical device that raises or lowers voltage depending on the costumers needs

Question 2

Define Capacitor

Answer 2

A device that stores energy by means of electrostatic charge

Question 3

Constant current Transformer (R.O.)

Answer 3

A transformer that automatically maintains a constant current in its secondary circuit under varying load

Question 4

Multiple street lights are connected in _____

Answer 4

Parallel

Question 5

Most accidents are caused by defective equipment

Answer 5

False

Question 6

A 4160 volts or star circuit has a phase to voltage of ______

Answer 6

Formula: voltage/1.73

4160/1.73 = 2400

Question 7

Working on transformers in parallel operations

Answer 7

Secondary side should be open first and closed last

Question 8

Whats the maximum resistance a ground should have?

Answer 8

25 Ohms

Question 9

what must be done to voltage regulators before 2 regulated circuits can be phased and tied together

Answer 9

They must be placed on neutral and locked out

Question 10

Whats 2 purposes does oil in a transformer serve?

Answer 10

1. Insulation

2. Cooling

Question 11

What does KVAR mean

Answer 11

Kilo Volt Amper Reactance

Question 12

All personal working on jobs that require the use of a helicopter will be briefed by the pilot and or supervisor as to their duties and safety precaution to be taken

Answer 12

True

Question 13

A customer complains of flickering lights what are two probable cause?

Answer 13

1) . Loose connections

2) . Wires touching

Question 14

When a line hose or rubber blanket is lowered from a pole it should be set aside anyplace out of the way.

Answer 14

False

Question 15

What are three types of faults that occur most often

Answer 15

1) . Phase to phase
2) . Phase to ground / neutral
3) . Open

Question 16

what precautions must be taken when connecting a current transformer?

Answer 16

Make sure grounds are off and secondary are connected

Question 17

Bond wires shall be not less than ___ inches from metal braces.

Answer 17

1 1/2 inches

Question 18

The difference between primary fuses marked “T”, “E” or “K” is the melting time of the links to open

Answer 18

True

Question 19

The climbing space on a pole shall be maintained in the same position for a distance of no less than ____ feet vertically both above and below each conductor level through which it passes.

Answer 19

4

Question 20

what must be done to the voltage regulators before two regulated circuits can be phased and tied together?

Answer 20

They must be placed on Neutral and locked out.

Question 21

What is meant by the interrupting capacity of a breaker

Answer 21

The point at which it trips the maximum amperage it can carry

Question 22

Shock is pressent in all cases of severe bleeding.

Answer 22

False

Question 23

After reaching the victim of a pole top accident what is the first action to be taken?

Answer 23

Carefully clear vicim from energized equipment

Question 24

Rubber goods should be relied on for accidental contact only

Answer 24

True

Question 25

Compressions in a sleeve used to splice conductors are made.

Answer 25

Starting at the center and working outward

Question 26

What is meant by "Blocking Reclosures?

Answer 26

Same as one shot

Question 27

The minimum safe working distance from a 12,000 volt circuit is _____

Answer 27

2'1"

Question 28

A multiple street light can be connected to any convenient secondary of proper voltage and does not require its own transformer.

Answer 28

False

Question 29

Rubber goods should not be left on conductors overnight because

Answer 29

all of the above

Question 30

The worst enemy of a Hot Stick is

Answer 30

Moisture

Question 31

The strength of a pole is expressed as is

Answer 31

Class

Question 32

On a 12,460 volt grounded why system 7,200 volt transformer are connected ____

Answer 32

Phase to Neutral

Question 33

A three phase delta system has no grounds on it. One phase accidentally grounded. What happens?

Answer 33

Nothing

Question 34

Two transmission lines exist on the same tower. If one is energized and the other is switched out and de-energized the voltage induced

Answer 34

Could Kill you

Question 35

What is the total load on the block in the following diagram

Answer 35

14,340

Question 36

In an open (two transformer) three phase bank the secondary:

Answer 36

Must be connected delta

Question 37

URD defines what?

Answer 37

Underground Residential Distribution

Question 38

The grounding conductor on a portable tool is

Answer 38

Green

Question 39

A sagging chart is used to

Answer 39

Show initial sag and tensions for sag throughout a line where tension is used in all spans

Question 40

Transformer fuses protect equipment from what?

Answer 40

Surge on the line

Question 41

Briefly define back-feed

Answer 41

When power is feed from the secondary side to the primary

Question 42

If it should ever become necessary to open a common neutral in a common neutral system, what must be done?

Answer 42

Mack it out and work it hot

Question 43

Transformer tap changer

Answer 43

Raise and lower output voltage of a transformer

Question 44

A transformer with built in protection for overhead is called what type of transformer

Answer 44

CSP

Question 45

Before working on a capacitor bank you should?

Answer 45

Disconnect the bank from the source, wait 5 min, shunt out each capacitor and ground

Question 46

A fusitor is used to

Answer 46

Limit Current

Question 47

What is Osha

Answer 47

Occupational Safety and Health Administration (OSHA) is a federal organization that ensures safe and healthy working conditions

Question 48

When is a line considered De-energized

Answer 48

When its been tested and grounded

Question 49

Define climbing space (G.O.95)

Answer 49

An area reserved for the lineman to ascend and descend in a safe manner.

Question 50

What is the proper way of securing a 15 KV blanket

Answer 50

clothes -pins

Question 51

You ar operating the puller on a wire stringing job and the puller begins to drag down and you notice the rope is getting extremely tight what should you do

Answer 51

Hold the pull and communicate to see if it is stuck somewhere

Question 52

A sectionalizer must be used in conjunction with what electrical apparatus

Answer 52

Automatic reclouser

Question 53

Two 10 KVA transformers are in parallel operation and you get a trouble call because on unit is smoking. When you arrive both units are still working. One unit is boiling and the other is cool. The connected load does not exceed the 20 KVA capacity of the two units. What are two possible problems?

Answer 53

1. ) Oil is low | 2. ) the impedance values are off

Question 54

If you suspect a fracture of the lower leg what part do you keep from moving

Answer 54

the whole leg

Question 55

Rubber goods should be relied on for accidental contact only.

Answer 55

True

Question 56

The conductor you put rubber goods on first is

Answer 56

Conductor nearest you

Question 57

you are working on a line crew when an accident occurs the foreman sends you to summon help who should you call and what info should you give them?

Answer 57

``` Call 911 Let them know my Name location status on injured personal what first aid has been given if a helicopter can land ```