| If it becomes absolutely necessary to run an alternator at lower than 5% below its rated frequency, in terms of output voltage, what must be done? |
| A) The alternator output voltage must be decreased proportionately downward with the frequency decrease. |
| B) Under no circumstances is it permissible to run an alternator at a frequency lower than 5% below its rated frequency. |
| C) The alternator output voltage must be increased proportionately upward to compensate for the frequency decrease. |
| D) The alternator output voltage must be maintained at the rated value for the alternator output voltage. |
