Font size
WorksheetsYear 2 Week 1
Total questions: 38
Worksheet time: 21mins
Which of the answer choices is correct when discussing Law of Charges?
Energy can be converted but it cannot be created or destroyed
opposite charges repel and like charges attract electrons
Like charges repel and opposite charges attract electrons
the speed that a magnet passes a conductor increases the voltage value
Of the answer choices what is not considered a factor in the strength of voltage to be produced?
The number in turns in the coil of wire
The strength of the magnetic field
The speed at which the magnetic lines of flux pass through the coil
the size of the conductor
what best defines this image?
sine wave a graphical representation of current and voltage over time
the sine wave, a graphical representation of what is happening to the voltage over time
the sine wave
a graph of voltage and time
Multiple Answers:
Which of the following is correct when discussing current and voltage rising and falling at the same time?
purely a resistive circuit is achieved
power factor is at 100%
they are said to be in phase
only in a purely inductive circuit is achieved
what are the three basic elements needed in order for a circuit to function properly?
source, conductor, and load
short circuit, open circuit
series and parallel circuit
voltage, amperage, and resistance
What defines a short circuit?
where a load is bypassed
a circuit that does not have a open point
an uninterrupted circuit
two conductors are provided, a phase and a neutral
Multiple Answers:
Series Circuits
have only one path for current to flow
current is constant in the circuit
have multiple paths for current to flow
voltage is constant in the circuit
This shows a lineman in...?
open circuit
Series with the circuit
parallel with the circuit
short circuit
Multiple Answers:
parallel circuits
have more than one path for current to flow
voltage remains constant
amperage remains constant
has only one conductor and one path for current to flow
Multiple Answers:
Induction
only occurs when a magnetic field expands and collapses
coiling jumpers will cause this and also lead to line loss
occurs when a conductor is moved through a magnetic field
coiling a conductor will increase this value
the electrical measurement called VARs is used to measure what?
Volts amps reactive
Reactive power in a purely inductive circuit
loss caused by inductance
capacitance
Multiple Answers:
Inductance
Coiling jumpers can cause this and contribute to line loss
is created by capacitors
the greater the number of turns on the conductor will cause this to be greater as well
the ability of a conductor to oppose a change in current
This device is used to correct power factor on electrical systems
coils of wire
regulators
GOAB switch
capacitor
If a customer's motor is spinning counter-clockwise and the phase sequence is ABC going in. Which of the following phase sequencing will cause the motor to spin clockwise?
BAC
BCA
CAB
Why are 4 wire WYE systems more popular in the country?
highly resistive soil conditions promote fault current to return back to the source
More reliable in regards to fault protection.
three wires is cheaper
it looks better
Multiple Answers:
When should phasing out be a necessary work practice?
before jumpers are removed from a junction pole
the phase sequencing needs to be proven correct before leaving the work site and closing out the job
not necessary
on series circuits
What is the the phase to phase voltage on a wye system if the phase to ground voltage is 7,620?
13,200 amps
15,240 volts
13,200 volts
20,800 volts
What is the phase to phase voltage on a Delta circuit if the voltage is 12,000?
12,000 volts
24,000 volts
Approximately what current value can cause ventricular fibrillation to the heart?
100-700 ma
1 ma
1 amp
20-50 ma
Limiting the amount of current flow and voltage drop across the lineman's body is the main objective of what?
bracket grounding
EPZ grounding
personal protective grounding
grounding
When installing EPZ grounds what can be considered a foreign ground?
grounded guy wires
messenger
any conductor of a different potential
insulators
What is the minimum size copper that OSHA allows when grounding?
2/0 awg
4/0 awg
1/0 awg
#2 awg
What is this? What does it do?
Dolly, used to ground the conductor
Running Ground.
a way of protecting the lineworker on the ground when stringing wire.
Running Ground,
used to ground the truck for a step potential
Traveler,
used for stringing wire
This image is describing what?
step potential
touch potential
grounding and bonding
induction
List the grounding process in order.
Identify, Isolate, Test, Clean and Ground
Denergize, isolate, test, and ground
test, clean, ground
de-energize, isolate, test, clean, ground
"Buzz" testing is adequate for testing before grounding.
True
False
OSHA's required wait time before grounding a capacitor is ____ after de-energizing.
20 min
10 min
5 min
test then ground
Define Fault Current
short circuit
the amount of current that a given system can deliver to a fault or short circuit
highest when at the end of the feeder
fire
This is useful to ground when?
working on overhead systems
working on underground systems
when working overhead transformers
when working on transformers
This image shows what tool?
copper wire with clamps
overhead ground
grounding spike clamp
c-clamps
Which answer choice lists the best ground sources in order of preference?
Metal structure, static or shield wire, ground rod, anchor rod
Static or shield wire, metal structure, anchor rod, ground rod
ground rod, anchor rod, metal structure, static or shield wire
anchor rod, metal structure, static or shield wire, ground rod
This DC HI-Pot tester is showing the cable is?
Good
Bad
What is this piece of equipment and what does it used for?
TDR
This is used on a secondary cable in the pipe to determine the fault location.
TDR
(Time Domain Reflectometer)
This is used to locate faulted primary direct buried cable
TDR
(Time Domain Reflectometer) This is used to determine the distance from the connected point to the fault
TDR
This is also called a "thumper" and is used to locate the location of a fault on direct buried cable
When using an ARC Reflection System, the surge generator is used to determine what?
Often called a "thumper" and is used to determine the exact location of faulted direct buried cable
Often called a "thumper" and is used to determine the exact location of secondary cable faults
often called a TDR and is used to find the distance of a fault on URD primary
Often called a DC hi-pot tester and is used to find location of direct buried secondary fault location
What are these pieces of equipment called?
Primary fault locator
Secondary Fault locators
Secondary Cable-fault locator & Transmitter
Cable fault locator
What is needed to determine this phase sequencing?
Voltmeter
Phasing Meter
Halo Ammmeter
Voltage detector
This is a ____ and is used on ____ values between ____ &____
voltmeter/ voltage/ 600 & 34,500 volts
Halo Ammeter/ Amperage/ 0 & 2,000 amps
Halo Ammeter/ amperage/ 0 & 600 amps
Hi voltage voltmeter/ voltage 2,400 & 34,500 volts
What is this?
Insulator tester
Resistance tester
voltage detector
ammeter
