AMT: GENERAL ORAL & PRACTICAL EXAM GUIDE WITH
ALL CORRECT & 100% VERIFIED ANSWERS|ALREADY
GRADED A+
What constitutes a capacitor? ✔Correct Answer-Two conductors separated by an insulator.
What is the purpose of a capacitor? ✔Correct Answer-It stores electrical energy in electrostatic
fields.
Does a capacitor in an AC circuit cause the current to lead or lag the voltage? ✔Correct Answer-It
causes the current to lead the voltage.
What is the basic unit of capacitance? ✔Correct Answer-The ferad.
Why should electrolytic capacitors not be used in an AC circuit? ✔Correct Answer-They are
polarized. An electrolytic capacitor will pass current of one polarity, but will block current of the
opposite polarity.
What is meant by inductance? ✔Correct Answer-The ability to store electrical energy in
electromagnetic fields.
What is the basic unit of inductance? ✔Correct Answer-The henry.
What is an example of an inductor used in a magneto? ✔Correct Answer-The coil.
Does an inductor in an AC circuit cause the current to lead or lag the voltage? ✔Correct Answer-It
causes the current to lag behind the voltage.
How can you find the polarity of an electromagnet? ✔Correct Answer-Hold the electromagnet in
your left hand with your fingers encircling the coil in the direction electrons flow (from negative to
positive). Your thumb will point to the north pole of the electromagnet.
What is meant by impedance? ✔Correct Answer-The total opposition to the flow of alternating
current. It is the vector sum of resistance capacitive reactance, and inductive reactance.
In what units is impedance measured? ✔Correct Answer-In ohms.
What are five sources of electrical energy? ✔Correct Answer-Magnetism, chemical energy, light,
heat, and pressure.
What is the basic unit of power in a DC circuit? ✔Correct Answer-The watt.
What is meant by a kilowatt? ✔Correct Answer-1,000 watts.
What is meant by a megawatt? ✔Correct Answer-1,000,000 watts.
What is the formula for power in a DC circuit? ✔Correct Answer-Power = Voltage times current (P =
E x I)
,What is the relationship between mechanical and electrical power? ✔Correct Answer-1 horsepower
= 746 watts
What is meant by true power in an AC circuit? ✔Correct Answer-The product of the circuit voltage
and the current that is in phase with this voltage.
In what units is true power expressed? ✔Correct Answer-In watts.
What is meant by apparent power in an AC circuit? ✔Correct Answer-The product of the circuit
voltage and the circuit current.
In what units is apparent power expressed? ✔Correct Answer-In volt-amps.
What is meant by the reactive power in an AC circuit? ✔Correct Answer-The power consumed in the
inductive and capacitive reactances in an AC circuit. Reactive power is also called wattless power.
In what units is reactive power expressed? ✔Correct Answer-In volt-amps reactive (VAR), or kilovolt-
amps reactive (KVAR).
What is meant by power factor in an AC circuit? ✔Correct Answer-The ratio of true power to
apparent power. It is also the ratio of circuit resistance to circuit impedance.
Which law of electricity is the most important for an aircraft mechanic to know? ✔Correct Answer-
Ohm's law.
What are the elements of Ohm's law? ✔Correct Answer-Voltage E, current I, and resistance R (volts,
amps, and ohms).
What is voltage? ✔Correct Answer-Electrical pressure.
What is the basic unit of voltage? ✔Correct Answer-The volt.
What instrument is used to measure voltage? ✔Correct Answer-A voltmeter.
To measure voltage, is a voltmeter placed in series or in parallel with the source of voltage?
✔Correct Answer-In parallel.
What is electrical current? ✔Correct Answer-The flow of electrons in a circuit.
What is the basic unit of current flow? ✔Correct Answer-The ampere (amp).
What part of an amp is a milliamp? ✔Correct Answer-One thousandth (0.001) of an amp.
What instrument is used to measure current flow? ✔Correct Answer-An ammeter.
What two things happen when current flows through a conductor? ✔Correct Answer-Head is
generated and a magnetic field surrounds the conductor.
To measure current through a component, is an ammeter placed in parallel or in series with the
component? ✔Correct Answer-In series.
, What is meant by resistance in an electrical circuit? ✔Correct Answer-The opposition to the flow of
electrons.
What is the basic unit of electrical resistance? ✔Correct Answer-The ohm.
What is a megohm? ✔Correct Answer-One million (1,000,000) ohms.
What four things affect the resistance of an electrical conductor? ✔Correct Answer-The material,
the cross-sectional area, the length, and the temperature.
What instrument is used to measure electrical resistance? ✔Correct Answer-An ohmmeter.
How can you tell the resistance of a composition resistor? ✔Correct Answer-By a series of colored
bands around one end of the resistor.
What is meant by continuity in an electrical circuit? ✔Correct Answer-The circuit is continuous (or
complete) when electrons can flow from one terminal of the power source to the other.
What instrument is used to measure continuity in an electrical circuit? ✔Correct Answer-An
ohmmeter.
When measuring resistance of a component with an ohmmeter, should the circuit be energized?
✔Correct Answer-No, there should be no power on the circuit.
What three things must an electric circuit contain? ✔Correct Answer-A source of electrical energy, a
load to use the energy, and conductors to join the source and the load.
What are three types of DC circuits with regard to the placement of various circuit components?
✔Correct Answer-Series, parallel, and series-parallel.
What is the name of the law that describes the relationship in electrical circuit of voltage, current
and resistance? ✔Correct Answer-Ohm's law.
What is the basic equation of Ohm's law? ✔Correct Answer-E = I x R
What formula is used to find current when voltage and resistance are known? ✔Correct Answer-I =
E/R
What formula is used to find resistance when voltage and current are known? ✔Correct Answer-R =
E/I
What happens to the current in a DC circuit if the voltage is increased but the resistance remains the
same? ✔Correct Answer-It increases.
What happens to the current in a conductor if the length of the conductor is doubled with all other
parameters unchanged? ✔Correct Answer-It would decrease to one half.
What is the voltage across each resistor connected in parallel across a 12-volt battery? ✔Correct
Answer-12 volts.
ALL CORRECT & 100% VERIFIED ANSWERS|ALREADY
GRADED A+
What constitutes a capacitor? ✔Correct Answer-Two conductors separated by an insulator.
What is the purpose of a capacitor? ✔Correct Answer-It stores electrical energy in electrostatic
fields.
Does a capacitor in an AC circuit cause the current to lead or lag the voltage? ✔Correct Answer-It
causes the current to lead the voltage.
What is the basic unit of capacitance? ✔Correct Answer-The ferad.
Why should electrolytic capacitors not be used in an AC circuit? ✔Correct Answer-They are
polarized. An electrolytic capacitor will pass current of one polarity, but will block current of the
opposite polarity.
What is meant by inductance? ✔Correct Answer-The ability to store electrical energy in
electromagnetic fields.
What is the basic unit of inductance? ✔Correct Answer-The henry.
What is an example of an inductor used in a magneto? ✔Correct Answer-The coil.
Does an inductor in an AC circuit cause the current to lead or lag the voltage? ✔Correct Answer-It
causes the current to lag behind the voltage.
How can you find the polarity of an electromagnet? ✔Correct Answer-Hold the electromagnet in
your left hand with your fingers encircling the coil in the direction electrons flow (from negative to
positive). Your thumb will point to the north pole of the electromagnet.
What is meant by impedance? ✔Correct Answer-The total opposition to the flow of alternating
current. It is the vector sum of resistance capacitive reactance, and inductive reactance.
In what units is impedance measured? ✔Correct Answer-In ohms.
What are five sources of electrical energy? ✔Correct Answer-Magnetism, chemical energy, light,
heat, and pressure.
What is the basic unit of power in a DC circuit? ✔Correct Answer-The watt.
What is meant by a kilowatt? ✔Correct Answer-1,000 watts.
What is meant by a megawatt? ✔Correct Answer-1,000,000 watts.
What is the formula for power in a DC circuit? ✔Correct Answer-Power = Voltage times current (P =
E x I)
,What is the relationship between mechanical and electrical power? ✔Correct Answer-1 horsepower
= 746 watts
What is meant by true power in an AC circuit? ✔Correct Answer-The product of the circuit voltage
and the current that is in phase with this voltage.
In what units is true power expressed? ✔Correct Answer-In watts.
What is meant by apparent power in an AC circuit? ✔Correct Answer-The product of the circuit
voltage and the circuit current.
In what units is apparent power expressed? ✔Correct Answer-In volt-amps.
What is meant by the reactive power in an AC circuit? ✔Correct Answer-The power consumed in the
inductive and capacitive reactances in an AC circuit. Reactive power is also called wattless power.
In what units is reactive power expressed? ✔Correct Answer-In volt-amps reactive (VAR), or kilovolt-
amps reactive (KVAR).
What is meant by power factor in an AC circuit? ✔Correct Answer-The ratio of true power to
apparent power. It is also the ratio of circuit resistance to circuit impedance.
Which law of electricity is the most important for an aircraft mechanic to know? ✔Correct Answer-
Ohm's law.
What are the elements of Ohm's law? ✔Correct Answer-Voltage E, current I, and resistance R (volts,
amps, and ohms).
What is voltage? ✔Correct Answer-Electrical pressure.
What is the basic unit of voltage? ✔Correct Answer-The volt.
What instrument is used to measure voltage? ✔Correct Answer-A voltmeter.
To measure voltage, is a voltmeter placed in series or in parallel with the source of voltage?
✔Correct Answer-In parallel.
What is electrical current? ✔Correct Answer-The flow of electrons in a circuit.
What is the basic unit of current flow? ✔Correct Answer-The ampere (amp).
What part of an amp is a milliamp? ✔Correct Answer-One thousandth (0.001) of an amp.
What instrument is used to measure current flow? ✔Correct Answer-An ammeter.
What two things happen when current flows through a conductor? ✔Correct Answer-Head is
generated and a magnetic field surrounds the conductor.
To measure current through a component, is an ammeter placed in parallel or in series with the
component? ✔Correct Answer-In series.
, What is meant by resistance in an electrical circuit? ✔Correct Answer-The opposition to the flow of
electrons.
What is the basic unit of electrical resistance? ✔Correct Answer-The ohm.
What is a megohm? ✔Correct Answer-One million (1,000,000) ohms.
What four things affect the resistance of an electrical conductor? ✔Correct Answer-The material,
the cross-sectional area, the length, and the temperature.
What instrument is used to measure electrical resistance? ✔Correct Answer-An ohmmeter.
How can you tell the resistance of a composition resistor? ✔Correct Answer-By a series of colored
bands around one end of the resistor.
What is meant by continuity in an electrical circuit? ✔Correct Answer-The circuit is continuous (or
complete) when electrons can flow from one terminal of the power source to the other.
What instrument is used to measure continuity in an electrical circuit? ✔Correct Answer-An
ohmmeter.
When measuring resistance of a component with an ohmmeter, should the circuit be energized?
✔Correct Answer-No, there should be no power on the circuit.
What three things must an electric circuit contain? ✔Correct Answer-A source of electrical energy, a
load to use the energy, and conductors to join the source and the load.
What are three types of DC circuits with regard to the placement of various circuit components?
✔Correct Answer-Series, parallel, and series-parallel.
What is the name of the law that describes the relationship in electrical circuit of voltage, current
and resistance? ✔Correct Answer-Ohm's law.
What is the basic equation of Ohm's law? ✔Correct Answer-E = I x R
What formula is used to find current when voltage and resistance are known? ✔Correct Answer-I =
E/R
What formula is used to find resistance when voltage and current are known? ✔Correct Answer-R =
E/I
What happens to the current in a DC circuit if the voltage is increased but the resistance remains the
same? ✔Correct Answer-It increases.
What happens to the current in a conductor if the length of the conductor is doubled with all other
parameters unchanged? ✔Correct Answer-It would decrease to one half.
What is the voltage across each resistor connected in parallel across a 12-volt battery? ✔Correct
Answer-12 volts.
