Engine 2014: Electricity

1. A to determine the individual frequencies of each leg of a three phase alternator output to be displayed on the frequency meter by selective switching
2. B to determine the difference between the individual frequencies of each leg of the three phase alternator output to be displayed on the frequency meter by selective switching
3. C to select which alternator frequency is to be displayed on the frequency meter
4. D to determine the average frequency of individual frequencies of each leg of a three phase alternator output to be displayed on the frequency meter

Tip: press A-D to answer