When the temperature of the center electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off of carbon commences is referred to as self cleaning temperature.

A. 0.02 to 0.6 mm B. 0.45 to 1.00 mm C. 0.90 to 2.00 mm D. 1.00 to 1.30 mm

A. It is the time for which the contact breaker points remain closed B. It is the time for which the contact breaker points remain open C. The time during which inlet and exhaust valves open D. The time during which inlet and exhaust valves close

A. Excess lubricants in cylinder B. Gum in fuel C. Over-heated spark plug D. Higher volume of air in air fuel mixture

A. Ignition coil, permanent magnet and electronic control unit B. A signal rotor, permanent magnet and electronic control unit C. A signal rotor, a pick up coil and electronic control unit D. A signal rotor, a pick up coil and a permanent magnet