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Control-systems Questions Set 6:

Quiz Mode

What should be the nature of bandwidth for a good control system?

Small

Medium

Large

All of the mentioned

Solution:

Which of the following analyses is not performed in the frequency domain?

Bode plot

Polar plot

Nyquist plot

Root locus

Solution:

For a system with process transfer function G(s) = K/(Ts+1), the steady-state error for the open-loop system will be zero when:

K = 1

K = 0

K < 1

K > 1

Solution:

The transfer function of a phase-lead compensator is given by G(s) = 1+ 3sT / 1+sT (T>0)
The maximum phase-shift provided by such a compensator is

Solution:

Choose the effect which is not caused by negative feedback in a system:

Reduction in output impedance

Increase in distortion

Increase in bandwidth

Reduction in gain

Solution:

Which of the following options accurately describes the poles of a continuous-time oscillator?

None of the above

Purely real

Purely imaginary

A mix of real and imaginary

Solution:

In a Bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 3rd order all-pole system?

80 dB/dec

60 dB/dec

-60 dB/dec

-40 dB/dec

Solution:

The characteristic equation of a control system is given by s(s+4)(s^2+2s+1) + k(s+1) = 0. What are the angles of the asymptotes for the root loci?

d) 120°, 180°, 240°

a) 0°, 180°, 300°

b) 0°, 120°, 240°

c) 60°, 180°, 300°

Solution:

A control system whose step response is -0.5(1+e^-2t) is cascaded to another control block whose impulse response is e^-t. What is the transfer function of the cascaded combination?

1/(s+1)s

0.5/(s+1)(s+2)

1/(s+2)(s+1)

none of them

Solution:

Signal flow graphs are primarily useful for

feedback control systems because feedback theory is primarily concerned with the flow and processing of signals in systems

analysing open-loop control systems

analysing non-linear feedback control systems

analysing non-linear control systems

Control-systems Questions Set 6:

What should be the nature of bandwidth for a good control system?

Solution:

Which of the following analyses is not performed in the frequency domain?

Solution:

For a system with process transfer function G(s) = K/(Ts+1), the steady-state error for the open-loop system will be zero when:

Solution:

The transfer function of a phase-lead compensator is given by G(s) = 1+ 3sT / 1+sT (T>0)
The maximum phase-shift provided by such a compensator is

Solution:

Choose the effect which is not caused by negative feedback in a system:

Solution:

Which of the following options accurately describes the poles of a continuous-time oscillator?

Solution:

In a Bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 3rd order all-pole system?

Solution:

The characteristic equation of a control system is given by s(s+4)(s^2+2s+1) + k(s+1) = 0. What are the angles of the asymptotes for the root loci?

Solution:

A control system whose step response is -0.5(1+e^-2t) is cascaded to another control block whose impulse response is e^-t. What is the transfer function of the cascaded combination?

Solution:

Signal flow graphs are primarily useful for

Solution:

Related Question Sets:

Related Topics:

Control-systems Questions Set 6:

What should be the nature of bandwidth for a good control system?

Solution:

Which of the following analyses is not performed in the frequency domain?

Solution:

For a system with process transfer function G(s) = K/(Ts+1), the steady-state error for the open-loop system will be zero when:

Solution:

The transfer function of a phase-lead compensator is given by G(s) = 1+ 3sT / 1+sT (T>0)The maximum phase-shift provided by such a compensator is

Solution:

Choose the effect which is not caused by negative feedback in a system:

Solution:

Which of the following options accurately describes the poles of a continuous-time oscillator?

Solution:

In a Bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 3rd order all-pole system?

Solution:

The characteristic equation of a control system is given by s(s+4)(s^2+2s+1) + k(s+1) = 0. What are the angles of the asymptotes for the root loci?

Solution:

A control system whose step response is -0.5(1+e-2t) is cascaded to another control block whose impulse response is e-t. What is the transfer function of the cascaded combination?

Solution:

Signal flow graphs are primarily useful for

Solution:

Related Question Sets:

Related Topics:

The transfer function of a phase-lead compensator is given by G(s) = 1+ 3sT / 1+sT (T>0)
The maximum phase-shift provided by such a compensator is

A control system whose step response is -0.5(1+e^-2t) is cascaded to another control block whose impulse response is e^-t. What is the transfer function of the cascaded combination?