FINAL EXAM#2 - IGNITION &
STARTING SYSTEMS QUESTIONS
WELL ANSWERED
What is the electrical location of the primary capacitor in a high-tension magneto? - ANS ✔✔In
parallel with the breaker points.
The amount of voltage generated in any magneto secondary coil is determined by the number
of windings and by the - ANS ✔✔rate of collapse of the magnetic field around the primary coil.
The E-gap angle is usually defined as the number of degrees between the neutral position of the
rotating magnet and the position - ANS ✔✔Where the contact point open.
In a high-tension ignition system, the current in the magneto secondary winding is - ANS
✔✔induced when the primary circuit is interrupted.
What will be the result of increasing the gap of the breaker points in a magneto? - ANS
✔✔Advance the spark and decrease its intensity.
The capacitor-type ignition system is used almost universally on turbine engines primarily
because of its high voltage and - ANS ✔✔high-heat intensity.
Magneto pole shoes are generally made of - ANS ✔✔laminations of high-grade soft iron.
When using a timing light to time a magneto to an aircraft engine, the magneto switch should
be placed in the - ANS ✔✔BOTH position.
, When the switch is off in a battery ignition system, the primary circuit is - ANS ✔✔opened.
Alignment of the marks provided for internal timing of a magneto indicates that the - ANS
✔✔magneto is in E-gap position.
The spark is produced in a magneto ignition system when the breaker points are - ANS
✔✔beginning to open.
When timing a mangeto internally, the alignment of the timing marks indicates that the - ANS
✔✔magnets are in the E-gap position.
Shielding is used on spark plug and ignition wires to - ANS ✔✔prevent interference with radio
reception.
In reference to a "Shower of Sparks" ignition system, (1) the retard breaker points are designed
to keep the affected ignition system operating if the advance breaker points should fail during
normal engine operation (after start). (2) the timed opening of the retard breaker points is
designed to prevent engine "kickback" during start. Which statement is true? - ANS ✔✔Only
No. 2 is true.
What is the purpose of using an impulse coupling with a magneto? - ANS ✔✔To produce a
momentary high rotational speed of the magneto.
What test instrument could be used to test an ignition harness for suspected leakage? - ANS
✔✔A high tension lead tester.
Aircraft magneto housings are usually ventilated in order to - ANS ✔✔provide cooling and
remove corrosive gases produced by normal arcing.
STARTING SYSTEMS QUESTIONS
WELL ANSWERED
What is the electrical location of the primary capacitor in a high-tension magneto? - ANS ✔✔In
parallel with the breaker points.
The amount of voltage generated in any magneto secondary coil is determined by the number
of windings and by the - ANS ✔✔rate of collapse of the magnetic field around the primary coil.
The E-gap angle is usually defined as the number of degrees between the neutral position of the
rotating magnet and the position - ANS ✔✔Where the contact point open.
In a high-tension ignition system, the current in the magneto secondary winding is - ANS
✔✔induced when the primary circuit is interrupted.
What will be the result of increasing the gap of the breaker points in a magneto? - ANS
✔✔Advance the spark and decrease its intensity.
The capacitor-type ignition system is used almost universally on turbine engines primarily
because of its high voltage and - ANS ✔✔high-heat intensity.
Magneto pole shoes are generally made of - ANS ✔✔laminations of high-grade soft iron.
When using a timing light to time a magneto to an aircraft engine, the magneto switch should
be placed in the - ANS ✔✔BOTH position.
, When the switch is off in a battery ignition system, the primary circuit is - ANS ✔✔opened.
Alignment of the marks provided for internal timing of a magneto indicates that the - ANS
✔✔magneto is in E-gap position.
The spark is produced in a magneto ignition system when the breaker points are - ANS
✔✔beginning to open.
When timing a mangeto internally, the alignment of the timing marks indicates that the - ANS
✔✔magnets are in the E-gap position.
Shielding is used on spark plug and ignition wires to - ANS ✔✔prevent interference with radio
reception.
In reference to a "Shower of Sparks" ignition system, (1) the retard breaker points are designed
to keep the affected ignition system operating if the advance breaker points should fail during
normal engine operation (after start). (2) the timed opening of the retard breaker points is
designed to prevent engine "kickback" during start. Which statement is true? - ANS ✔✔Only
No. 2 is true.
What is the purpose of using an impulse coupling with a magneto? - ANS ✔✔To produce a
momentary high rotational speed of the magneto.
What test instrument could be used to test an ignition harness for suspected leakage? - ANS
✔✔A high tension lead tester.
Aircraft magneto housings are usually ventilated in order to - ANS ✔✔provide cooling and
remove corrosive gases produced by normal arcing.
