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

Electronics and Communication Engineering (ECE) : Automatic Control Systems - Quiz(MCQ)

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 the above

Correct Answer : Option (C) : Phase relation of voltages applied to the two stator windings

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For a quadratic factor in denominator of transfer function the phase angle at corner frequency (in Bode phase angle plot)

is +90Â°

is -90Â°

depends on the damping factor

None of the above

Correct Answer : is -90Â°

The response to sinusoidal excitation can be found by

setting s = jÏ‰ in the network function

setting s = -jÏ‰ in the network function

taking inverse transform of network function

None of the above

Correct Answer : setting s = jÏ‰ in the network function

The resolution of a wire wound potentiometer is about

0.1%

0.001%

Correct Answer : 0.1%