What is a maintenance-free battery?

At the start of the engine, the charging voltage is _______

The total enthalpy required to cause the flame to be self-sustaining and promote ignition, is given by the product of the surface area of the spherical flame and the enthalpy per unit area.

An ignition system should provide a good spark between the _____________ of the plugs at the correct timing.

The function of the ignition system is to _____________ the flame propagation process.

For which medium is capacitance high?

A spark can be caused by applying a sufficiently low voltage between two electrodes separated by a gap.

Capacitor stores which type of energy?