Generated voltage of a synchronous motor is 100V. If the excitation increased 1.8 times what will be the new generated voltage.

Correct option is D

The generated voltage in a synchronous motor is directly proportional to the field excitation. If the excitation is increased by a factor, the generated voltage will also increase by the same factor.

Given:

• Initial generated voltage (V₁) = 100 V
• Increase in excitation = 1.8 times

The new generated voltage (V₂) can be calculated as:

​​$$V_2 = V_1 \times \text{Increase factor}$$

$$V_2 = 100 V \times 1.8$$

$$V_2 = 180 V$$​​​​