How much spark per minute is required by an eight-cylinder engine running at 4000 rpm?

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