Control Systems MCQ Questions & Answers

11.
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

A. True

B. False

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12.
In the field controlled motor the entire damping comes from

A. Armature resistance

B. Back emf

C. Motor friction and load

D. Field resistance

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13.
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

A. True

B. False

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14.
Integral control action

A. Removes offset

B. May lead to oscillatory response

C. Both (a) and (b)

D. Neither (a) nor (b)

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15.
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

A. True

B. False

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16.
For type 1 system the velocity lag error is

A. Inversely proportional to bandwidth of system

B. Directly proportional to gain constant

C. Inversely proportional to gain constant

D. Independent of gain constant

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17.
The effect of adding poles and zeros can be determined quickly by

A. Nichols chart

B. Nyquist plot

C. Bode plot

D. Root locus

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18.
Which of the following can be used as a rotating amplifier in a control system?
1. Amplidyne
2. Separately excited dc generator
3. Synchro
4. Self excited dc generator

A. 3 and 4

B. 1 and 2

C. 1, 2 and 3

D. All

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19.
In control systems the output of sensor usually, is

A. Analog electrical signal

B. Digital electrical signal

C. Mechanical signal

D. Analog or digital electrical signal

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20.
M circles are symmetrical with respect to

A. Real and imaginary axis

B. M = 1 straight line and real axis

C. M = 1 straight line and imaginary axis

D. M = 1 straight line

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Control Systems MCQ Questions & Answers | ECE

11. For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

Answer & Solution

12. In the field controlled motor the entire damping comes from

Answer & Solution

13. In Bode plots the frequency at which two asymptotes meet is called corner frequency.

Answer & Solution

14. Integral control action

Answer & Solution

15. Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

Answer & Solution

16. For type 1 system the velocity lag error is

Answer & Solution

17. The effect of adding poles and zeros can be determined quickly by

Answer & Solution

18. Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator

Answer & Solution

19. In control systems the output of sensor usually, is

Answer & Solution

20. M circles are symmetrical with respect to

Answer & Solution

11.
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.

12.
In the field controlled motor the entire damping comes from

13.
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

14.
Integral control action

15.
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

16.
For type 1 system the velocity lag error is

17.
The effect of adding poles and zeros can be determined quickly by

18.
Which of the following can be used as a rotating amplifier in a control system?
1. Amplidyne
2. Separately excited dc generator
3. Synchro
4. Self excited dc generator

19.
In control systems the output of sensor usually, is

20.
M circles are symmetrical with respect to