Question 1

With feedback _____ increases.

Accepted Answer

A) system stability 
B) sensitivity 
C) gain 
D) effects of disturbing signals 
A) system stability 
B) sensitivity 
C) gain 
D) effects of disturbing signals A

Question 2

An increase in gain, in most systems, leads to

Accepted Answer

A) smaller damping ratio 
B) larger damping ratio 
C) constant damping ratio 
D) none of the above 
A) smaller damping ratio 
B) larger damping ratio 
C) constant damping ratio 
D) none of the above A

Question 3

The type 0 system has ______ at the origin.

Accepted Answer

A) no pole 
B) net pole 
C) simple pole 
D) two poles 
A) no pole 
B) net pole 
C) simple pole 
D) two poles A

Question 4

Which of the following can be measured by the use of a tachogenerator ?

Accepted Answer

A) acceleration 
B) speed 
C) speed and acceleration 
D) displacement 
A) acceleration 
B) speed 
C) speed and acceleration 
D) displacement

Question 5

Spring constant in force-voltage analogy is analogous to

Accepted Answer

A) capacitance 
B) reciprocal of capacitance 
C) current 
D) resistance 
A) capacitance 
B) reciprocal of capacitance 
C) current 
D) resistance

Question 6

The phase lag produced by transportation relays

Accepted Answer

A) is independent of frequency 
B) is inverseh'proportional to frequency 
C) increases linearly with frequency 
D) decreases linearly with frequency 
A) is independent of frequency 
B) is inverseh'proportional to frequency 
C) increases linearly with frequency 
D) decreases linearly with frequency

Question 7

A conditionally stable system exhibits poor stability at

Accepted Answer

A) low frequencies 
B) reduced values of open loop gain 
C) increased values of open loop gain 
D) none of the above 
A) low frequencies 
B) reduced values of open loop gain 
C) increased values of open loop gain 
D) none of the above

Question 8

technique is not applicable to nonlinear system ?

Accepted Answer

A) nyquist criterion 
B) quasi linearization 
C) functional analysis 
D) phase-plane representation 
A) nyquist criterion 
B) quasi linearization 
C) functional analysis 
D) phase-plane representation

Question 9

The position and velocity errors of a type-2 system are

Accepted Answer

A) constant, constant 
B) constant, infinity 
C) zero, constant 
D) zero, zero 
A) constant, constant 
B) constant, infinity 
C) zero, constant 
D) zero, zero

Question 10

The type 1 system has ______ at the origin.

Accepted Answer

A) no pole 
B) net pole 
C) simple pole 
D) two poles 
A) no pole 
B) net pole 
C) simple pole 
D) two poles

Question 11

The type 2 system has ______ at the origin.

Accepted Answer

A) no net pole 
B) net pole 
C) simple pole 
D) two poles 
A) no net pole 
B) net pole 
C) simple pole 
D) two poles

Question 12

In order to increase the damping of a badly underdamped system which of following compensators may be used ?

Accepted Answer

A) phase-lead 
B) phase-lag 
C) both (a) and (b) 
D) either (a) and (b) 
A) phase-lead 
B) phase-lag 
C) both (a) and (b) 
D) either (a) and (b)

Question 13

In a system low friction co-efficient facilitates

Accepted Answer

A) reduced velocity lag error 
B) increased velocity lag error 
C) increased speed of response 
D) reduced time constant of the system 
A) reduced velocity lag error 
B) increased velocity lag error 
C) increased speed of response 
D) reduced time constant of the system

Question 14

Phase margin of a system is used to specify which of the following ?

Accepted Answer

A) frequency response 
B) absolute stability 
C) relative stability 
D) time response 
A) frequency response 
B) absolute stability 
C) relative stability 
D) time response

Question 15

Which of the following is the definition of proportional band of a controller ?

Accepted Answer

A) the range of air output as measured variable varies from maximum to minimum 
B) the range of measured variables from set value 
C) the range of measured variables through which the air output changes from maximum to minimum 
D) any of the above 
A) the range of air output as measured variable varies from maximum to minimum 
B) the range of measured variables from set value 
C) the range of measured variables through which the air output changes from maximum to minimum 
D) any of the above

Question 16

is not a final control element.

Accepted Answer

A) control valve 
B) potentiometer 
C) electropneumatic converter 
D) servomotor 
A) control valve 
B) potentiometer 
C) electropneumatic converter 
D) servomotor

Question 17

Addition of zeros in transfer function causes which of the following ?

Accepted Answer

A) lead-compensation 
B) lag-compensation 
C) lead-lag compensation 
D) none of the above 
A) lead-compensation 
B) lag-compensation 
C) lead-lag compensation 
D) none of the above

Question 18

If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

Accepted Answer

A) not necessarily stable 
B) stable 
C) unstable 
D) always unstable 
A) not necessarily stable 
B) stable 
C) unstable 
D) always unstable

Question 19

In case of type-1 system steady state acceleration is

Accepted Answer

A) unity 
B) infinity 
C) zero 
D) 10 
A) unity 
B) infinity 
C) zero 
D) 10

Question 20

specified ________ input signal.

Accepted Answer

A) acceleration 
B) velocity 
C) position 
D) all of the above 
A) acceleration 
B) velocity 
C) position 
D) all of the above

With feedback _____ increases.

An increase in gain, in most systems, leads to

The type 0 system has ______ at the origin.

Which of the following can be measured by the use of a tachogenerator ?

Spring constant in force-voltage analogy is analogous to

The phase lag produced by transportation relays

A conditionally stable system exhibits poor stability at

technique is not applicable to nonlinear system ?

The position and velocity errors of a type-2 system are

The type 1 system has ______ at the origin.

The type 2 system has ______ at the origin.

In order to increase the damping of a badly underdamped system which of following compensators may be used ?

In a system low friction co-efficient facilitates

Phase margin of a system is used to specify which of the following ?

Which of the following is the definition of proportional band of a controller ?

is not a final control element.

Addition of zeros in transfer function causes which of the following ?

If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

In case of type-1 system steady state acceleration is

specified ________ input signal.

Control Systems and Feedback Loops

Control Systems and Analogies

Pneumatic Control Systems and Control Elements

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Exam 3: Control Systems

With feedback _____ increases.

An increase in gain, in most systems, leads to

The type 0 system has ______ at the origin.

Which of the following can be measured by the use of a tachogenerator ?

Spring constant in force-voltage analogy is analogous to

The phase lag produced by transportation relays

A conditionally stable system exhibits poor stability at

technique is not applicable to nonlinear system ?

The position and velocity errors of a type-2 system are

The type 1 system has ______ at the origin.

The type 2 system has ______ at the origin.

In order to increase the damping of a badly underdamped system which of following compensators may be used ?

In a system low friction co-efficient facilitates

Phase margin of a system is used to specify which of the following ?

Which of the following is the definition of proportional band of a controller ?

is not a final control element.

Addition of zeros in transfer function causes which of the following ?

If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

In case of type-1 system steady state acceleration is

specified ________ input signal.

Control Systems and Feedback Loops

Control Systems and Analogies

Pneumatic Control Systems and Control Elements

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