At low speeds, the ignition spark should be supplied closer to the TDC. Is this statement true or false?

The statement that at low speeds, the ignition spark should be supplied closer to the Top Dead Center (TDC) is true. At lower engine speeds, the engine operates more slowly, which means that there is more time for the air-fuel mixture to ignite before the piston reaches the TDC. Igniting the spark at this time allows for a more efficient combustion process, leading to smoother engine operation and improved torque delivery.

Timing the spark closer to TDC helps to ensure that the peak pressure from the combustion event occurs as the piston begins its downward stroke. This timing is crucial for maximizing power and efficiency, especially at low RPMs where the engine requires more torque. As the engine speeds up, the spark should be advanced further from TDC to accommodate the faster intake and combustion dynamics.

The other options either provide incorrect scenarios or conditions under which the ignition timing would not be optimal for low-speed operation. Therefore, acknowledging that at low speeds, the ignition spark timing should indeed be closer to TDC is essential for proper engine performance.