Automatic Control Systems
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if

The gain is increased beyond upper critical value
None of these
The gain is decreased below lower critical value
Both A and B

ANSWER DOWNLOAD EXAMIANS APP

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

ANSWER DOWNLOAD EXAMIANS APP