A. Corner
B. Resonant
C. Cross-over
D. Natural
Related Mcqs:
- According to Bode stability criterion, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is_________________?
A. 0°
B. 45°
C. 90°
D. 180° - “A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?
A. Bode stability
B. Nyquist
C. Routh stability
D. None of these - What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
A. 1
B. > 1
C. < 1
D. None of these - A first order system with unity gain and time constant η is subjected to a sinusoidal input of frequency w = 1/η. The amplitude ratio for this system is______________?
A. 1
B. 0.5
C. 1/√2
D. 0.25 - The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?
A. e-ηS
B. (T1S + 1)/(T2S + 1)
C. (T1S/(T2S + 1)
D. (T1S + 1)/(T2S - Conversion formula for converting amplitude ratio (AR) into decibels is ________________?
A. Decibel = 20 log10 (AR)
B. Decibel = 20 loge (AR)
C. Decibel = 20 log10 (AR)0.5
D. Decibel = 20 loge (AR)0.5 - An amplitude ratio of 0.1 corresponds to _____________ decibels?
A. 20
B. -20
C. 10
D. -10 - The amplitude ratio for the sinusoidal response of __________ is < 1?
A. Transportation lag
B. First order system
C. Second order system
D. None of these - The amplitude ratio for the sinusoidal response of a _____________ is 1?
A. First order system
B. Second order system
C. Transportation lag
D. None of these - A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?
A. 45°
B. -90°
C. -180°
D. -45°
