The GATE Grind

GATE Control Systems: Frequency Response – Previous Year Questions

5 GATE previous year questions on Frequency Response (Control Systems, Electronics and Communication Engineering) with answers and explanations, from every paper.

  1. GATE 2017 EC Q29 (1 mark, Multiple choice) – Consider a stable system with transfer function G(s) = sp + b 1 sp-1 + + b psq + a 1 sq-1 + + a q where b 1, , b p and a 1, , a q are real valued…
  2. GATE 2015 EC Q31 (1 mark, Multiple choice) – The polar plot of the transfer function G(s) = 10(s + 1)s + 10 for 0 < will be in the
  3. GATE 2018 EC Q51 (2 marks, Numerical answer) – For a unity feedback control system with the forward path transfer function G(s)=Ks(s+2) The peak resonant magnitude M r of the closed-loop frequency…
  4. GATE 2020 EC Q59 (2 marks, Numerical answer) – A system with transfer function G(s)=1(s+1)(s+a), a>0 is subjected to an input 53t. The steady state output of the system is 110(3t-1.892). The value…
  5. GATE 2023 EC Q25 (1 mark, Multiple choice) – The open loop transfer function of a unity negative feedback system is G(s)=ks(1+sT 1)(1+sT 2), where k, T 1 and T 2 are positive constants. The phase…