Ignition Systems questions with correct answers

Ignition Systems questions with
correct answers

What is a magneto? - ANS ✔✔Self-contained AC generator driven by the engine for the purpose
of ignition.



What is the purpose of the condenser in a high-tension magneto electrical system? - ANS ✔✔1)
To prevent arcing at the points

2) Hasten the collapse of magnetic fields around the primary coil



Where is the E gap position in a magneto? - ANS ✔✔The poles of the rotating magnet are a few
degrees past the neutral position. E gap is the position at which the points begin to open.



What are the 3 major circuits of a high tension magneto system? - ANS ✔✔1) Magnetic Circuit

2) Primary electrical circuit

3) Secondary electrical circuit



What are the components of a high tension magnetic circuit? - ANS ✔✔1) Permanent multi-
pole rotating magnet

2) Soft iron core

3) Pole shoes



What happens when the primary breaker points open in a magneto? - ANS ✔✔The opening
stops the flow of current in the primary coil. The magnetic field emitted by the primary coil
collapses. As the magnetic field collapses the flux lines that cut across the windings of the
secondary coil thus inducing a pulse of high voltage current in the secondary coil needed to fire
the spark plugs.