Q. If G(s)H(s) = K (T₁s + 1)/[s² (T₂s + 1)] the system stability depended an relative magnitudes of T₁ and T₂.

View solution

Q. In a simple on-off controller with differential gap, the magnitude of differential gap determines

View solution

Q. Consider the following statements about root locus

1. The root locus is symmetrical about real axis.
2. If a root locus branch moves along the real axis from an open loop pole to zero or to infinity, this root locus branch is called real root branch.
3. The breakaway points of the root locus are the solutions of dK/dS = 0

Which statements out of above are correct?

View solution

Q. In Bode plots the frequency at which two asymptotes meet is called corner frequency.

View solution

Q. In Bode plots, frequency is plotted on log scale.

View solution

Q. For a type 1 system and unit step input, the steady state error is

View solution

Q. Nichol's chart is symmetric about - 180° axis.

View solution

Q. If the Nyquist plot encircles the (-1 + j0) point clockwise once or more number of times, the system is unstable.

View solution

Q. Which dc servomotor requires strongest permanent magnet?

View solution

Q. Nichols chart consists of

View solution

Q. Consider the following statements about root locus

1. The intersection of root locus branches with the imaginary axis can be determined by the use of Routh criterion
2. Segments of real axis having an odd number of real axis open loop poles plus zeros to their right are not parts of root locus
3. The number of root locus branches terminating on infinity is always zero

Which of the above statements are correct?

View solution

Q. The poles with greater displacement from the real axis correspond to

View solution

Q. Which of the following is open loop system?

View solution

Q. Which of the following is used to obtain output position in a position control system?

View solution

Q. In a synchro transmitter-control transformer, the voltage induced in rotor winding of control transformer is zero when the angular displacement between rotors of transmitter and transformer is

View solution

Q. DC tachogenerator can be used in

View solution

Q. Assertion (A): If points at infinity are included, G(s) has same number of poles and zeros.

Reason (R): The function G(s) = K(s+2) / (s+5)² has a zero at s = - 2.

View solution

Q. If the characteristic equation is (λ + 1) (λ + 2) (λ + 3) = 0, the eigen values are

View solution

Q. Lag compensation permits a high gain at low frequencies.

View solution

Q. If the poles lie in second quadrant, damping ratio is

View solution