In a Weston frequency meter, the magnetic axes of the two fixed coils are
1). Parallel
2). Perpendicular
3). Inclined at 60°
4). Inclined at 120°
The Weston frequency meter is a moving iron instrument used to calculate the unknown frequency of a singnal.
It also has two fixed coils whose magnetic axes are perpendicular to each other.
So, the correct option is 2). Perpendicular
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