Control System | True-False Questions

Q. Bode plot and Nyquist plot have some relation.

Answer
True

Q. From Bode plot static error coefficient cannot be determined.

Answer
False

Q. The Bode plot of gain constant is a straight line parallel to the frequency axis with phase angle 0° for positive value and 180° for negative value of gain constant.

Answer
True

Q. The polar plot and Nicholas plot can be had from Bode plot and vice versa.

Answer
True

Q. The Bode plot is a plot relating log w with magnitude in decibel and phase angle.

Answer
True

Q. The closed loop frequency response can be had from open loop frequency plot.

Answer
True

Q. The bandwidth of a system is the range of frequencies (of the output) over which the system will respond satisfactorily.

Answer
True

Q. Roots of the closed loop control system can be had from Bode plot.

Answer
False

Q. The root locus originates at the zeros of the characteristic equation.

Answer
False

Q. The polar plot relates the magnitude in decibel with phase angle.

Answer
False

Q. According to the Shanon’s sampling theorem, the lowest sampling frequency is double the bandwidth.

Answer
True

Q. A system is stable if its closed-loop poles are on the RHS of the s-plane.

Answer
False

Q. For a system it is possible that open loop to be unstable but closed loop stable.

Answer
True

Q. Active devices cannot be employed for stabilization.

Answer
False

Q. A system is absolutely stable if its oscillations are not strong enough to change the parameters of the system.

Answer
False

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