Control System | True-False Questions

Q. Bode plot and Nyquist plot have some relation.

True

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

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.

True

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

True

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

True

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

True

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

True

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

False

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

False

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

False

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

True

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

False

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

True

Q. Active devices cannot be employed for stabilization.

False

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