In a second order undamped system, the poles are on
Answer: B
If poles are on imaginary axis the response is undamped and oscillatory.
Modelling error may occur due to
Answer: D
Any of these may cause modelling error.
Derivative control action is effective?
Answer: B
Derivative of constant is zero. Hence derivative control action is not effective is steady state.
In position control system the device used for providing rate feedback voltage is
Answer: D
Tacho generator provides a voltage whose magnitude is proportional to speed.
A system has 12 poles and 2 zeros. Its high frequency asymptote in its magnitude plot has a slope of
Answer: A
-(12 - 2) 20 or - 200 dB/decade.