Electrical Engg (EEE) - MCQ Practice Questions

A unity feedback control system has an open-loop transfer function G(s) = 10/(s(s+2)). What is the steady-state error for a unit ramp input?

In a Bode plot, what is the phase margin when the gain crossover frequency equals the phase crossover frequency?

Which of the following transfer functions represents a Type-2 system?

For a second-order system with ζ = 0.5 and ωn = 4 rad/s, what is the peak overshoot?

What is the effect of adding a pole at the origin to a stable open-loop system?

In the root locus of a system with open-loop transfer function G(s)H(s) = K(s+2)/(s(s+1)(s+3)), how many branches exist?

A lead compensator Gc(s) = K(s+a)/(s+b) where b > a provides maximum phase lead at frequency:

What is the bandwidth of a first-order system with time constant τ = 0.1 seconds?

In state-space representation, if eigenvalues of A matrix are at s = -1, -2, -3, the system is:

For an underdamped second-order system, the relationship between settling time ts and damping ratio ζ is:

Which compensator is preferred for improving steady-state error without significantly affecting transient response?

The static error constant for a Type-1 system with G(s) = 20/(s(s+5)(s+10)) is:

For a system to be controllable using state feedback u = -Kx, which condition must be satisfied?

A system has poles at -2±j3. The natural frequency and damping ratio are approximately:

In a unity feedback system, increasing loop gain K generally:

The corner frequency of a transfer function H(s) = 1/(1 + s/10) occurs at:

For improving transient response with minimal steady-state error impact, a lead compensator should be designed to add phase lead at:

A system with characteristic equation s³ + 6s² + 11s + 6 = 0 has poles at:

In a compensated system, if phase margin PM = 30° and gain margin GM = 8 dB, this indicates:

A control system has an open-loop transfer function G(s)H(s) = K/[s(s+2)(s+4)]. What is the type of this system?