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Control-systems Questions Set 8:

Quiz Mode

If a first-order system has a time constant of 1.5, the rise time and settling time are respectively:

3.3, 6.6

6, 2.2

3.3, 6

2.2, 4

Solution:

With negative feedback in a closed loop control system, the system sensitivity to parameter variation:

tends to infinity

becomes 0

decreases

increases

Solution:

Which system configuration is more susceptible (or sensitive) to noise?

Open loop system.

Closed loop system.

Both are equally susceptible.

Both are insensitive.

Solution:

Which of the following is the input of a controller?

Signal of fixed amplitude not dependent on desired variable value

Desired variable value

Sensed signal

Error signal

Solution:

A control system working under unknown random actions is called ____________

Adaptive control system

Stochastic control system

Computer control system

Digital data system

Solution:

What is the effect of adding a pole to the root locus?

More stable and less oscillatory system

Less stable and more oscillatory system

Less stable and less oscillatory system

No effect

Solution:

Which of the following statements is correct for any closed loop system?

Only one of the static error co-efficient has a finite non-zero value

All the co-efficient can have zero value

All the co-efficient are always non-zero

All of the mentioned

Solution:

The response of an LCR circuit to a step input is an oscillatory system if and only if the transfer function has:

Poles on the imaginary axis

Multiple poles on the positive real axis

Poles on the positive real axis

Multiple poles on the negative real axis

Solution:

The steady-state error is the error when

the time period is large but there is oscillating behaviour of the output

the time period is not less than one microsecond

the time period is large and the transient response has decayed

the time period is large but the transient response is still persisting

Solution:

What is Control System?

Control system is a system in which the output is controlled by varying the input

Control system is a device that will not manage or regulate the behaviour of other devices using control loops

Control system is a feedback system that can be both positive and negative

Control System is a system in which the input is controlled by varying the output

Control-systems Questions Set 8:

If a first-order system has a time constant of 1.5, the rise time and settling time are respectively:

Solution:

With negative feedback in a closed loop control system, the system sensitivity to parameter variation:

Solution:

Which system configuration is more susceptible (or sensitive) to noise?

Solution:

Which of the following is the input of a controller?

Solution:

A control system working under unknown random actions is called ____________

Solution:

What is the effect of adding a pole to the root locus?

Solution:

Which of the following statements is correct for any closed loop system?

Solution:

The response of an LCR circuit to a step input is an oscillatory system if and only if the transfer function has:

Solution:

The steady-state error is the error when

Solution:

What is Control System?

Solution:

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