In a minimum phase system - Automatic Control Systems

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

In a minimum phase system

all poles lie in the left half plane

all poles lie in the right half plane

all zeros lie in the left half plane

all except one pole or zero lie in the left half plane

Correct Answer : Option (C) : all zeros lie in the left half plane

Explanation : For stability poles must be in left half plane. Zeros in left half plane lead to minimum phase shift.

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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%