Question 1

Which of the following is the non-linearity caused by servomotor ?

Accepted Answer

A) Static friction 
B) Backlash 
C) Saturation 
D) None of the above 
A) Static friction 
B) Backlash 
C) Saturation 
D) None of the above C

Question 2

Which of the following devices is used for conversion of co-ordinates ?

Accepted Answer

A) Microsyn 
B) Selsyn 
C) Synchro-resolver 
D) Synchro-transformer 
A) Microsyn 
B) Selsyn 
C) Synchro-resolver 
D) Synchro-transformer C

Question 3

A differentiator is usually not a part of a control system because it

Accepted Answer

A) reduces damping 
B) reduces the gain margin 
C) increases input noise 
D) increases error 
A) reduces damping 
B) reduces the gain margin 
C) increases input noise 
D) increases error C

Question 4

Which of the following can be measured by the use of a tacho-generator ?

Accepted Answer

A) Acceleration 
B) Speed 
C) Speed and acceleration 
D) Displacement 
A) Acceleration 
B) Speed 
C) Speed and acceleration 
D) Displacement

Question 5

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 chan¬ges 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 chan¬ges from maximum to minimum 
D) Any of the above

Question 6

A phase lag lead network introduces in the output

Accepted Answer

A) lag at all frequencies 
B) lag at high frequencies and lead at low frequencies 
C) lag at low frequencies and lead at high frequencies 
D) none of the above 
A) lag at all frequencies 
B) lag at high frequencies and lead at low frequencies 
C) lag at low frequencies and lead at high frequencies 
D) none of the above

Question 7

The effect of error damping is to

Accepted Answer

A) provide larger settling lime 
B) delay the response 
C) reduce steady state error 
D) any of the above 
A) provide larger settling lime 
B) delay the response 
C) reduce steady state error 
D) any of the above

Question 8

The transfer function technique is considered as inadequate under which of the following conditions ?

Accepted Answer

A) Systems having complexities and non-linearities 
B) Systems having stability problems 
C) Systems having multiple input dis¬turbances 
D) All of the above 
A) Systems having complexities and non-linearities 
B) Systems having stability problems 
C) Systems having multiple input dis¬turbances 
D) All of the above

Question 9

The first order control system, which is well designed, has a

Accepted Answer

A) small bandwidth 
B) negative time constant 
C) large negative transfer function pole 
D) none of the above 
A) small bandwidth 
B) negative time constant 
C) large negative transfer function pole 
D) none of the above

Question 10

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 11

is not a final control element.

Accepted Answer

A) Control valve 
B) Potentiometer 
C) Electro-pneumatic converter 
D) Servomotor 
A) Control valve 
B) Potentiometer 
C) Electro-pneumatic converter 
D) Servomotor

Question 12

In a stable control system saturation can cause which of the following ?

Accepted Answer

A) Low-level oscillations 
B) High-level oscillations 
C) Conditional stability 
D) Overdamping 
A) Low-level oscillations 
B) High-level oscillations 
C) Conditional stability 
D) Overdamping

Question 13

Pressure error can be measured by which of the following ?

Accepted Answer

A) Differential bellows and straingauge 
B) Selsyn 
C) Strain gauge 
D) Strain gauge and potentiometer 
A) Differential bellows and straingauge 
B) Selsyn 
C) Strain gauge 
D) Strain gauge and potentiometer

Question 14

A.C. servomotor is basically a

Accepted Answer

A) universal motor 
B) single phase induction motor 
C) two phase induction motor 
D) three phase induction motor 
A) universal motor 
B) single phase induction motor 
C) two phase induction motor 
D) three phase induction motor

Question 15

Which of the following is the output of a thermocouple ?

Accepted Answer

A) Alternating current 
B) Direct current 
C) A.C. voltage 
D) D.C. voltage 
A) Alternating current 
B) Direct current 
C) A.C. voltage 
D) D.C. voltage

Question 16

Which of the following can be measured byLVDT?

Accepted Answer

A) Displacement 
B) Velocity 
C) Acceleration 
D) Any of the above 
A) Displacement 
B) Velocity 
C) Acceleration 
D) Any of the above

Question 17

directly converts temperature into voltage.

Accepted Answer

A) Thermocouple 
B) Potentiometer 
C) Gear train 
D) LVDT 
A) Thermocouple 
B) Potentiometer 
C) Gear train 
D) LVDT

Question 18

When the initial conditions of a system are specified to be zero it implies that the system is

Accepted Answer

A) at rest without any energy stored in it 
B) working normally with reference input 
C) working normally with zero reference input 
D) at rest but stores energy 
A) at rest without any energy stored in it 
B) working normally with reference input 
C) working normally with zero reference input 
D) at rest but stores energy

Question 19

can be extended to systems which are time-varying ?

Accepted Answer

A) Bode-Nyquist stability methods 
B) Transfer functions 
C) Root locus design 
D) State model representatives 
A) Bode-Nyquist stability methods 
B) Transfer functions 
C) Root locus design 
D) State model representatives

Question 20

In a control system integral error compensation _______ steady state error

Accepted Answer

A) increases 
B) minimizes 
C) does not have any effect on 
D) any of the above 
A) increases 
B) minimizes 
C) does not have any effect on 
D) any of the above

Which of the following is the non-linearity caused by servomotor ?

Which of the following devices is used for conversion of co-ordinates ?

A differentiator is usually not a part of a control system because it

Which of the following can be measured by the use of a tacho-generator ?

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

A phase lag lead network introduces in the output

The effect of error damping is to

The transfer function technique is considered as inadequate under which of the following conditions ?

The first order control system, which is well designed, has a

The phase lag produced by transportation relays

is not a final control element.

In a stable control system saturation can cause which of the following ?

Pressure error can be measured by which of the following ?

A.C. servomotor is basically a

Which of the following is the output of a thermocouple ?

Which of the following can be measured byLVDT?

directly converts temperature into voltage.

When the initial conditions of a system are specified to be zero it implies that the system is

can be extended to systems which are time-varying ?

In a control system integral error compensation _______ steady state error

Control Systems and Feedback Loops: Understanding Open and Closed Loop Systems

Control Systems and Analogy Analogies

Control Systems

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Exam 4: Control System Components and Functions

Which of the following is the non-linearity caused by servomotor ?

Which of the following devices is used for conversion of co-ordinates ?

A differentiator is usually not a part of a control system because it

Which of the following can be measured by the use of a tacho-generator ?

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

A phase lag lead network introduces in the output

The effect of error damping is to

The transfer function technique is considered as inadequate under which of the following conditions ?

The first order control system, which is well designed, has a

The phase lag produced by transportation relays

is not a final control element.

In a stable control system saturation can cause which of the following ?

Pressure error can be measured by which of the following ?

A.C. servomotor is basically a

Which of the following is the output of a thermocouple ?

Which of the following can be measured byLVDT?

directly converts temperature into voltage.

When the initial conditions of a system are specified to be zero it implies that the system is

can be extended to systems which are time-varying ?

In a control system integral error compensation _______ steady state error

Control Systems and Feedback Loops: Understanding Open and Closed Loop Systems

Control Systems and Analogy Analogies

Control Systems

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