Loop gain is equal to: - Automatic Control Systems

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

Loop gain is equal to:

Product of all branch gains in a loop

Summation of all branch gains in a loop

Sum of all branch gains while traversing the forward path

Product of all branch gains while traversing the forward path

Correct Answer : Option (D) : Product of all branch gains while traversing the forward path

Explanation : According to Mason's Gain formula, the transfer function can be calculated as : T(s) = C(s)/R(s)

Recently Updated in Automatic Control Systems Questions

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%