Control Systems Correlation Time Frequency Response Online Exam Quiz
Control Systems Correlation Time Frequency Response GK Quiz. Question and Answers related to Control Systems Correlation Time Frequency Response. MCQ (Multiple Choice Questions with answers about Control Systems Correlation Time Frequency Response
The gain margin in dBs of a unity feedback control system whose open loop transfer function, G(s) H(s) =1/s(s+1) is
Options
A : 0
B : 1
C : -1
D : ?
The phase angle of the system G(s) =s+5/s2+4s+9;varies between
Options
A : 0° and 90°
B : 0° and -90°
C : 0° and -180°
D : -90° and -180°
The forward path transfer function of a unity feedback system is given by G(s) = 100/(s2+10s+100). The frequency response of this system will exhibit the resonance peak at:
Options
A : 10 rad/sec
B : 8.66 rad/sec
C : 7.07 rad/sec
D : 5rad/sec
The critical value of gain for the system is 40. The system is operating at a gain of 20. The gain margin of the system is :
Options
A : 2 dB
B : 3 dB
C : 6 dB
D : 4 dB
The transfer function of a system is given by Y(s)/X(s) = e?0.1s/1+s. If x(t) is 0.5sint, then the phase angle between the output and the input will be:
Options
A : -39.27°
B : -45°
C : -50.73°
D : -90°
Which one of the following statements is correct for gain margin and phase margin of two closed-loop systems having loop functions G(s) H(s) and exp(-s) G(s) H(s)?
Options
A : Both gain and phase margins of the two systems will be identical
B : Both gain and phase margins of G(s) H(s) will be more
C : Gain margins of the two systems are the same but phase margins of G(s) H(s) will be more
D : Phase margins of the two systems are the same but gain margin of G(s) H(s) will be less
The loop transfer function of a system is given by G(s) H(s) =10e-Ls/s. The phase crossover frequency is 5rad/s. The value of the dead time L is
Options
A : ?/20
B : ?/10
C : -?/20
D : Zero
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