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

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

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Automatic Control Systems
A lag compensator

Speeds up the transient response of the system
Improves steady state behavior and preserves the transient response of the system
Improves steady state behavior of the system
Improves steady state behavior and speeds up the transient response of the system

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

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
Magnitudes of voltages applied to the two stator windings

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