ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
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.
(ELI the ICE man)
What is the basic unit of capacitance? -
correct answer ✅Farad
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.
, ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
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 ✅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 leade or lag
the voltage? -
correct answer ✅It causes the current to lag behind the voltage
(ELI the ICE man)
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.
, ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
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 ✅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 ✅Watt
What is meant by a kilowatt? -
correct answer ✅1000 Watts
What is meant by a megawatt? -
correct answer ✅1,000,000 watts
, ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
What is the formula for power in a DC circuit? -
correct answer ✅Power = Voltage times current (P = E x I)
What is the relationship betwee 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 ✅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.
(General, Airframe, Powerplant) Exam
Questions And Answers
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.
(ELI the ICE man)
What is the basic unit of capacitance? -
correct answer ✅Farad
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.
, ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
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 ✅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 leade or lag
the voltage? -
correct answer ✅It causes the current to lag behind the voltage
(ELI the ICE man)
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.
, ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
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 ✅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 ✅Watt
What is meant by a kilowatt? -
correct answer ✅1000 Watts
What is meant by a megawatt? -
correct answer ✅1,000,000 watts
, ASA Oral and Practical Exam Guide
(General, Airframe, Powerplant) Exam
Questions And Answers
What is the formula for power in a DC circuit? -
correct answer ✅Power = Voltage times current (P = E x I)
What is the relationship betwee 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 ✅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.
