If any term in the first column of a Routh array becomes zero, then

Routh criterion can be used by substituting a small positive number for zero and completing the array

Routh criterion cannot be used to determine stability

Routh criterion can be used by substituting a big positive number for zero and completing the array

Routh criterion can be used by substituting a small negative number for zero and complet-ing the array

Correct Answer : Option (A) : Routh criterion can be used by substituting a small positive number for zero and completing the array

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 +90°

is -90°

depends on the damping factor

None of the above

Correct Answer : is -90°

The response to sinusoidal excitation can be found by

setting s = jω in the network function

setting s = -jω in the network function

taking inverse transform of network function

None of the above

Correct Answer : setting s = jω in the network function

The resolution of a wire wound potentiometer is about

0.1%

0.001%

Correct Answer : 0.1%