# Questions on Feedback Control System with Answers PDF Download

Learn questions on feedback control system with answers FAQ, control systems questions to ask in an interview with MCQs based online test prep. Frequently asked interview questions has multiple choice questions (MCQ), questions on feedback control system with answers MCQ: amount of additional open loop phase shift required at unity gain to make closed loop system unstable is called, answer key with choices gain margin, phase margin, amplitude margin and frequency margin for competitive exam preparation.

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## FAQs: Questions on Feedback Control System with Answers Download PDF

MCQ: Amount of additional open loop phase shift required at unity gain to make closed loop system unstable is called

- gain margin
- phase margin
- amplitude margin
- frequency margin

B

MCQ: Frequency at which magnitude frequency response plots equal to is 0dB is called

- gain margin frequency
- natural frequency
- phase margin frequency
- phase margin frequency

D

MCQ: State variables such that each subsequent state variable is derivative of previous state variable is called

- phase variable
- gain variable
- amplitude variable
- frequency variable

A

MCQ: Phasor is also known as

- complexor
- phase
- gain
- Nyquist phase

A

MCQ: Complex number which represents a sinusoidal function whose amplitude, angular frequency, and initial phase are time-invariant is called

- phase
- gain
- phasor
- Nyquist phase

C