LINEMAN APPRENTICE LINEMAN GENERAL
KNOWLEDGE EXAM QUESTIONS AND 100%
VERIFIED ANSWERS
Questions for Apprentice Lineman preparing for Journeyman's exam.
What year was the IBEW formed, and who was its President? - ANSWER 1890, Henry
Miller
What should be checked for when examining as injured person? - ANSWER 1. Breathing
2. Pulse
3. Head Injury
4. Paralysis on one side of the face
5. Laryngectomee
6. Stains and burns on or around the mouth
What is shock? - ANSWER A depressed state of all body functions due to failure of the
circulatory system.
What are some signs of shock? - ANSWER 1. Increased shallow breathing
2. Cold clammy skin
3. Low body temperature
How should shock be treated? - ANSWER 1. Maintain normal body temperature
2. Ensure adequate oxygen supply
3. Keep warm
4. Control bleeding if necessary lie down with your head lower than feet
5. Do not move unless necessary
What are ways to control bleeding? - ANSWER Direct pressure on the pressure point and in
extreme cases tourniquet.
What is artificial respiration? - ANSWER The forcing of air into the lungs of one who
cannot breathe for himself.
How deep should a gain be cut? - ANSWER 1/2"
Poles set on curves, corners, and strain points should be set __________ inches deeper. -
ANSWER 6
If a pole is set near an energized line what precautions should be taken? - ANSWER 1.
Cover with protective equipment
,2. Feeder holds
3. Rubber gloves
Wood poles are classified by their: - ANSWER 1. Height
2. Top circumference
3. Circumference 6' from the bottom of the pole
The denominator of an improper fraction is __________ than the numerator. - ANSWER
smaller
What materials do electrons travel freely through? - ANSWER conductors
If few electrons travel freely through a material, that material is said to be an _________. -
ANSWER insulator
Is there such a thing as a perfect insulator? - ANSWER no
The opposition to current flow through a material is called? - ANSWER resistance
What is the unit of measurement of resistance? - ANSWER Ohm
What is the resistance of 1000 feet of #10 copper? - ANSWER 1 Ohm
What is electric current? - ANSWER The definite drift of electrons from a point of negative
potential to a point of positive potential.
The unit of measurement of electromotive force is the: - ANSWER Volt
The unit of current flow is: - ANSWER Ampere
In a circuit the current is __________ proportional to the voltage and __________
proportional to the resistance. - ANSWER directly, inversely
The __________ at which work is done is power. The formula for this is: - ANSWER rate,
Power = Work ÷ Time
One joule of work done in one second of time is one __________ of electrical work. -
ANSWER Watt
The unit of electrical work is the __________ ? - ANSWER Joule
The unit of electrical power is the __________ ? - ANSWER Watt
,__________ is the unit of measurement of work for mechanical power. - ANSWER
Horsepower
What is the most common cause for lost power? - ANSWER heat
How many watts are in one horsepower? - ANSWER 746
One watt equals __________ horsepower? - ANSWER .00134
1/746
What is a watts definition? - ANSWER The power used when one amp flows with one volt.
What is the speed of light? - ANSWER 186,000 miles per second
What NECA district covers outside work exclusively? - ANSWER Tenth District
What is a guy? - ANSWER A brace or cable fastened to strengthen a pole and to keep it in
position.
Aluminum has what conductivity, tensile strength, and weight of copper? - ANSWER 60%,
45%, 33%
One mill is equal to __________ of an inch? - ANSWER 1/1000
How do you find the circular mil cross section area of a wire? - ANSWER Square the
diameter of the wire in mills.
What is the mathematical expression for series resistance? - ANSWER Rt = R₁ + R₂ + R₃ +
R₄...
A circuit having only one current path is called a __________ circuit? - ANSWER series
What is the formula for determining the total current in a series circuit? - ANSWER It = I₁ =
I₂ = I₃ = I₄...
Electrical energy is transformed into __________ when current flows through a resistor. -
ANSWER heat
What is the formula for power in a series circuit? - ANSWER Pt = P₁ + P₂ + P₃ +P₄...
What is the formula for voltage in a parallel circuit? - ANSWER Et = E₁ = E₂ = E₃ = E₄...
, What is the formula for resistance in a parallel circuit? - ANSWER 1/Rt = 1/R₁ + 1/R₂ +
1/R₃ + 1/R₄...
What is the formula for total current in a parallel circuit? - ANSWER It = I₁ + I₂ + I₃ + I₄...
What is the formula to find total power in a parallel circuit? - ANSWER Pt = P₁ + P₂ + P₃ +
P₄...
What is produced when a conductor is moved through magnetic lines of force? - ANSWER
an EMF is induced
A device used to convert AC power from one combination of voltage and current to another
is called a __________ ? - ANSWER transformer
The sheet iron core of a transformer forms a closed: - ANSWER magnetic circuit
How are the primary and secondary windings of a transformer coupled? - ANSWER
magnetically
What is the formula for number of windings to voltage? - ANSWER voltage
primary/voltage secondary = number of turns primary/number of turns secondary
What destroys transformers in an overload situation? - ANSWER heat
The purpose of oil in a transformer is: - ANSWER cool and insulate the coils
What keeps a transformer from acting as a short circuit? - ANSWER Counter voltage (aka:
back voltage, CEMF)
What is usually the maximum temperature the insulation in a transformer can stand? -
ANSWER 221° F (105° C)
Why are underground transformers and their bushings hermetically sealed? - ANSWER To
guard against moisture damage.
What does a CSP transformer have that a conventional does not? - ANSWER 1. Primary
lightning arrestor
2. Primary protective fuse link
3. Overcurrent protection on secondary
4. Overload Signal lamp
5. External Operating handle for opening and closing secondary
6. No load tap changer
What is the formula for resistivity of a wire? - ANSWER R = (K x L) ÷ A
KNOWLEDGE EXAM QUESTIONS AND 100%
VERIFIED ANSWERS
Questions for Apprentice Lineman preparing for Journeyman's exam.
What year was the IBEW formed, and who was its President? - ANSWER 1890, Henry
Miller
What should be checked for when examining as injured person? - ANSWER 1. Breathing
2. Pulse
3. Head Injury
4. Paralysis on one side of the face
5. Laryngectomee
6. Stains and burns on or around the mouth
What is shock? - ANSWER A depressed state of all body functions due to failure of the
circulatory system.
What are some signs of shock? - ANSWER 1. Increased shallow breathing
2. Cold clammy skin
3. Low body temperature
How should shock be treated? - ANSWER 1. Maintain normal body temperature
2. Ensure adequate oxygen supply
3. Keep warm
4. Control bleeding if necessary lie down with your head lower than feet
5. Do not move unless necessary
What are ways to control bleeding? - ANSWER Direct pressure on the pressure point and in
extreme cases tourniquet.
What is artificial respiration? - ANSWER The forcing of air into the lungs of one who
cannot breathe for himself.
How deep should a gain be cut? - ANSWER 1/2"
Poles set on curves, corners, and strain points should be set __________ inches deeper. -
ANSWER 6
If a pole is set near an energized line what precautions should be taken? - ANSWER 1.
Cover with protective equipment
,2. Feeder holds
3. Rubber gloves
Wood poles are classified by their: - ANSWER 1. Height
2. Top circumference
3. Circumference 6' from the bottom of the pole
The denominator of an improper fraction is __________ than the numerator. - ANSWER
smaller
What materials do electrons travel freely through? - ANSWER conductors
If few electrons travel freely through a material, that material is said to be an _________. -
ANSWER insulator
Is there such a thing as a perfect insulator? - ANSWER no
The opposition to current flow through a material is called? - ANSWER resistance
What is the unit of measurement of resistance? - ANSWER Ohm
What is the resistance of 1000 feet of #10 copper? - ANSWER 1 Ohm
What is electric current? - ANSWER The definite drift of electrons from a point of negative
potential to a point of positive potential.
The unit of measurement of electromotive force is the: - ANSWER Volt
The unit of current flow is: - ANSWER Ampere
In a circuit the current is __________ proportional to the voltage and __________
proportional to the resistance. - ANSWER directly, inversely
The __________ at which work is done is power. The formula for this is: - ANSWER rate,
Power = Work ÷ Time
One joule of work done in one second of time is one __________ of electrical work. -
ANSWER Watt
The unit of electrical work is the __________ ? - ANSWER Joule
The unit of electrical power is the __________ ? - ANSWER Watt
,__________ is the unit of measurement of work for mechanical power. - ANSWER
Horsepower
What is the most common cause for lost power? - ANSWER heat
How many watts are in one horsepower? - ANSWER 746
One watt equals __________ horsepower? - ANSWER .00134
1/746
What is a watts definition? - ANSWER The power used when one amp flows with one volt.
What is the speed of light? - ANSWER 186,000 miles per second
What NECA district covers outside work exclusively? - ANSWER Tenth District
What is a guy? - ANSWER A brace or cable fastened to strengthen a pole and to keep it in
position.
Aluminum has what conductivity, tensile strength, and weight of copper? - ANSWER 60%,
45%, 33%
One mill is equal to __________ of an inch? - ANSWER 1/1000
How do you find the circular mil cross section area of a wire? - ANSWER Square the
diameter of the wire in mills.
What is the mathematical expression for series resistance? - ANSWER Rt = R₁ + R₂ + R₃ +
R₄...
A circuit having only one current path is called a __________ circuit? - ANSWER series
What is the formula for determining the total current in a series circuit? - ANSWER It = I₁ =
I₂ = I₃ = I₄...
Electrical energy is transformed into __________ when current flows through a resistor. -
ANSWER heat
What is the formula for power in a series circuit? - ANSWER Pt = P₁ + P₂ + P₃ +P₄...
What is the formula for voltage in a parallel circuit? - ANSWER Et = E₁ = E₂ = E₃ = E₄...
, What is the formula for resistance in a parallel circuit? - ANSWER 1/Rt = 1/R₁ + 1/R₂ +
1/R₃ + 1/R₄...
What is the formula for total current in a parallel circuit? - ANSWER It = I₁ + I₂ + I₃ + I₄...
What is the formula to find total power in a parallel circuit? - ANSWER Pt = P₁ + P₂ + P₃ +
P₄...
What is produced when a conductor is moved through magnetic lines of force? - ANSWER
an EMF is induced
A device used to convert AC power from one combination of voltage and current to another
is called a __________ ? - ANSWER transformer
The sheet iron core of a transformer forms a closed: - ANSWER magnetic circuit
How are the primary and secondary windings of a transformer coupled? - ANSWER
magnetically
What is the formula for number of windings to voltage? - ANSWER voltage
primary/voltage secondary = number of turns primary/number of turns secondary
What destroys transformers in an overload situation? - ANSWER heat
The purpose of oil in a transformer is: - ANSWER cool and insulate the coils
What keeps a transformer from acting as a short circuit? - ANSWER Counter voltage (aka:
back voltage, CEMF)
What is usually the maximum temperature the insulation in a transformer can stand? -
ANSWER 221° F (105° C)
Why are underground transformers and their bushings hermetically sealed? - ANSWER To
guard against moisture damage.
What does a CSP transformer have that a conventional does not? - ANSWER 1. Primary
lightning arrestor
2. Primary protective fuse link
3. Overcurrent protection on secondary
4. Overload Signal lamp
5. External Operating handle for opening and closing secondary
6. No load tap changer
What is the formula for resistivity of a wire? - ANSWER R = (K x L) ÷ A
