CONTROL SYSTEM MCQs SET 31
1. Constant M- loci:
a) Constant gain and constant phase shift loci of the closed-loop system.
b) Plot of loop gain with the variation in frequency
c) Circles of constant gain for the closed loop transfer function
d) Circles of constant phase shift for the closed loop transfer function
a) Constant gain and constant phase shift loci of the closed-loop system.
b) Plot of loop gain with the variation in frequency
c) Circles of constant gain for the closed loop transfer function
d) Circles of constant phase shift for the closed loop transfer function
Answer: d
2. Constant N-loci:
a) Constant gain and constant phase shift loci of the closed-loop system.
b) Plot of loop gain with the variation in frequency
c) Circles of constant gain for the closed loop transfer function
d) Circles of constant phase shift for the closed loop transfer function
2. Constant N-loci:
a) Constant gain and constant phase shift loci of the closed-loop system.
b) Plot of loop gain with the variation in frequency
c) Circles of constant gain for the closed loop transfer function
d) Circles of constant phase shift for the closed loop transfer function
Answer: c
3. Nichol’s chart:
a) Constant gain and constant phase shift loci of the closed-loop system.
b) Plot of loop gain with the variation in frequency
c) Circles of constant gain for the closed loop transfer function
d) Circles of constant phase shift for the closed loop transfer function
3. Nichol’s chart:
a) Constant gain and constant phase shift loci of the closed-loop system.
b) Plot of loop gain with the variation in frequency
c) Circles of constant gain for the closed loop transfer function
d) Circles of constant phase shift for the closed loop transfer function
Answer: b
4. Stability of a system implies that:
a) Small changes in the system input does not result in large change in system output
b) Small changes in the system parameters does not result in large change in system output
c) Small changes in the initial conditions does not result in large change in system output
d) All of the above mentioned
4. Stability of a system implies that:
a) Small changes in the system input does not result in large change in system output
b) Small changes in the system parameters does not result in large change in system output
c) Small changes in the initial conditions does not result in large change in system output
d) All of the above mentioned
Answer: d
5. A linear time invariant system is stable if:
a) System in excited by the bounded input, the output is also bounded
b) In the absence of input output tends zero
c) Both a and b
d) System in excited by the bounded input, the output is not bounded
5. A linear time invariant system is stable if:
a) System in excited by the bounded input, the output is also bounded
b) In the absence of input output tends zero
c) Both a and b
d) System in excited by the bounded input, the output is not bounded
Answer: c
6. Asymptotic stability is concerned with:
a) A system under influence of input
b) A system not under influence of input
c) A system under influence of output
d) A system not under influence of output
6. Asymptotic stability is concerned with:
a) A system under influence of input
b) A system not under influence of input
c) A system under influence of output
d) A system not under influence of output
Answer: b
7. Bounded input and Bounded output stability notion concerns with :
a) A system under influence of input
b) A system not under influence of input
c) A system under influence of output
d) A system not under influence of output
7. Bounded input and Bounded output stability notion concerns with :
a) A system under influence of input
b) A system not under influence of input
c) A system under influence of output
d) A system not under influence of output
Answer: a
8. If a system is given unbounded input then the system is:
a) Stable
b) Unstable
c) Not defined
d) Linear
8. If a system is given unbounded input then the system is:
a) Stable
b) Unstable
c) Not defined
d) Linear
Answer: c
9. Linear mathematical model applies to:
a) Linear systems
b) Stable systems
c) Unstable systems
d) Non-linear systems
9. Linear mathematical model applies to:
a) Linear systems
b) Stable systems
c) Unstable systems
d) Non-linear systems
Answer: b
10. For non-linear systems stability cannot be determined due to:
a) Possible existence of multiple equilibrium states
b) No correspondence between bounded input and bounded output stability and asymptotic stability
c) Output may be bounded for the particular bounded input but may not be bounded for the bounded inputs
d) All of the mentioned
10. For non-linear systems stability cannot be determined due to:
a) Possible existence of multiple equilibrium states
b) No correspondence between bounded input and bounded output stability and asymptotic stability
c) Output may be bounded for the particular bounded input but may not be bounded for the bounded inputs
d) All of the mentioned
Answer: d
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