Automatic Control Systems
The addition of a pole to the open loop transfer function pulls the root locus

To the right
To the left and making the system more stable
None of these
Towards right or left depending on the position of new pole

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Automatic Control Systems
In a two phasor servomotor, the direction of rotation of the rotating field depends on

Magnitudes of voltages applied to the two stator windings
Both magnitude and phase relationship of voltages applied to the two stator windings
Phase relation of voltages applied to the two stator windings
None of these

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