Final answer:
The main advantages of a dual ignition system are improved fuel distribution and redundancy for safety. Westinghouse's AC power invention's primary advantage was the ability to transmit power over longer distances, making electricity more accessible.
Step-by-step explanation:
The two main advantages of a dual ignition system are improved fuel distribution and redundancy. Improved fuel distribution leads to more efficient combustion, which can enhance power and engine efficiency. Redundancy, on the other hand, provides an extra level of safety; if one ignition system fails, the other can maintain engine operation, which is particularly important in aviation.
The major advantage of Westinghouse's “alternating current” (AC) power invention was that it allowed machines to be farther from the power source. This is because alternating current can be easily transformed to higher voltages, which allows it to be transmitted over long distances with minimal loss of power. This made electricity more accessible and facilitated the widespread distribution of electrical power.