Electrical Engg (EEE) - MCQ Practice Questions

In compensator design, if both transient and steady-state improvements are needed, which approach is preferred?

For a closed-loop control system with unity feedback, increasing proportional gain K primarily causes:

Which of the following correctly represents the Nyquist stability criterion?

For the state-space system: ẋ = Ax + Bu, y = Cx + Du. The controllability matrix rank must equal n for the system to be completely state controllable. What is n?

In a lag-lead compensator design for a Type 1 system, what is the primary purpose of the lag section?

Which stability criterion is based on Lyapunov's second method?

In root locus, the breakaway point on the real axis occurs where:

A proportional controller with Kp = 10 is applied to a unity feedback system with G(s) = 1/[s(s+2)]. The velocity error constant Kv is:

In phase plane analysis, what does a limit cycle represent?

The Bode magnitude plot of G(s) = 100/(s+10) at ω = 10 rad/s shows:

A unity feedback control system has open-loop transfer function G(s) = K/[s(s+2)(s+4)]. For the system to be marginally stable, the value of K should be approximately:

In a lead compensator design, if the phase lead angle required is 45°, the value of α (attenuation factor) in the compensator Gc(s) = (1+αTs)/(1+Ts) should be:

Which of the following statements about state-space representation is INCORRECT?