DC EM1 ETA EXAM REVIEW WITH ALL CORRECT &
VERIFIED ANSWERS (UPDATED TO PASS)
Can there be an atom without neutrons? Correct answer-Yes, a hydrogen atom for instance
Diamagnetic Correct answer-Repelled by a magnetic field; gold, copper, silver, and water are this
Ferromagnetic Correct answer-Highly susceptible to magnetization; iron, cobalt, nickel, and some
alloys are this
Paramagnetic Correct answer-Weakly attracted by a magnetic field; aluminium, platinum, and
uranium are this
Soft iron Correct answer-Easily gets and loses magnetization
Hard iron Correct answer-Hard to get and retains magnetization
Magnetic flux lines Correct answer-Parallel lines of force that always go from the north pole to the
south pole in a magnet
Thévenin's Theorem Correct answer-You can simplify any series-parallel circuit to a series circuit
Kirchhoff's Current Law (1st) Correct answer-Current leaving a node is equal to current entering
the node
Kirchhoff's Voltage Law (2nd) Correct answer-The algebraic sum of all the voltages in a given circuit
will be equal to zero, VT = V1 + V2 + V3... / VT - V1 - V2 - V3 = 0
Human tolerance of current Correct answer-1mA: can feel it
5mA - 10mA: can't let go
Up to 60mA: possibly fatal
60mA+: fatal
Fire Classes Correct answer-A - green: common combustibles (wood, paper)
B - red: flammable liquids (alcohol, acetone) and gases (gasoline, propane, solvents)
C - blue: live electrical equipment
D - yellow: chemicals/combustible metals (magnesium, lithium, titanium)
K - black: cooking media (oils and fats)
Wheatstone Bridge Correct answer-Rx = Rs * R1/R2
Rx: resistor being measured
Rs: variable resistor
OSHA Correct answer-Occupational Safety and Health Administration: it sets and enforces
standards and provides training, outreach, education, and safety to assure safe and healthful
workplaces
How can you discharge yourself? Correct answer-Touch a piece of metal connected to the ground
Anti-static wrist straps Correct answer-Dissipate static charge and prevent ESD (electrostatic
discharge)
VERIFIED ANSWERS (UPDATED TO PASS)
Can there be an atom without neutrons? Correct answer-Yes, a hydrogen atom for instance
Diamagnetic Correct answer-Repelled by a magnetic field; gold, copper, silver, and water are this
Ferromagnetic Correct answer-Highly susceptible to magnetization; iron, cobalt, nickel, and some
alloys are this
Paramagnetic Correct answer-Weakly attracted by a magnetic field; aluminium, platinum, and
uranium are this
Soft iron Correct answer-Easily gets and loses magnetization
Hard iron Correct answer-Hard to get and retains magnetization
Magnetic flux lines Correct answer-Parallel lines of force that always go from the north pole to the
south pole in a magnet
Thévenin's Theorem Correct answer-You can simplify any series-parallel circuit to a series circuit
Kirchhoff's Current Law (1st) Correct answer-Current leaving a node is equal to current entering
the node
Kirchhoff's Voltage Law (2nd) Correct answer-The algebraic sum of all the voltages in a given circuit
will be equal to zero, VT = V1 + V2 + V3... / VT - V1 - V2 - V3 = 0
Human tolerance of current Correct answer-1mA: can feel it
5mA - 10mA: can't let go
Up to 60mA: possibly fatal
60mA+: fatal
Fire Classes Correct answer-A - green: common combustibles (wood, paper)
B - red: flammable liquids (alcohol, acetone) and gases (gasoline, propane, solvents)
C - blue: live electrical equipment
D - yellow: chemicals/combustible metals (magnesium, lithium, titanium)
K - black: cooking media (oils and fats)
Wheatstone Bridge Correct answer-Rx = Rs * R1/R2
Rx: resistor being measured
Rs: variable resistor
OSHA Correct answer-Occupational Safety and Health Administration: it sets and enforces
standards and provides training, outreach, education, and safety to assure safe and healthful
workplaces
How can you discharge yourself? Correct answer-Touch a piece of metal connected to the ground
Anti-static wrist straps Correct answer-Dissipate static charge and prevent ESD (electrostatic
discharge)
