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Automatic Control Systems(Engineering > Electrical Engineering ) Questions and Answers
Home
Topic
Engineering
Electrical Engineering
Automatic Control Systems
Question 1.
In control systems the output of sensor usually, is
Analog electrical signal
Digital electrical signal
Mechanical signal
Analog or digital electrical signal
Explanation:-
Answer: Option D. ->
Analog or digital electrical signal
Question 2.
In root locus analysis the breakaway and break in points
lie on the real axis
Either lie on the real axis or occur in complex conjugate pairs
Always occur in complex conjugate pairs
None of the above
Explanation:-
Answer: Option B. ->
Either lie on the real axis or occur in complex conjugate pairs
Question 3.
If any term in the first column of a routh array becomes zero, then
Routh criterion cannot be used to determine stability
Routh criterion can be used by substituting a small positive number for zero and completing the array
Routh criterion can be used by substituting a big positive number for zero and completing the array
Routh criterion can be used by substituting a small negative number for zero and complet-ing the array
Explanation:-
Answer: Option B. ->
Routh criterion can be used by substituting a small positive number for zero and completing the array
Question 4.
Integral control action
Removes offset
May lead to oscillatory response
Both (a) and (b)
Neither (a) nor (b)
Explanation:-
Answer: Option C. ->
Both (a) and (b)
Question 5.
For type 1 system the velocity lag error is
Inversely proportional to bandwidth of system
Directly proportional to gain constant
Inversely proportional to gain constant
Independent of gain constant
Explanation:-
Answer: Option C. ->
Inversely proportional to gain constant
Question 6.
Lag compensation permits a high gain at low frequencies.
True
False
Always occur in complex conjugate pairs
None of the above
Explanation:-
Answer: Option A. ->
True
Question 7.
A lag compensator
Speeds up the transient response of the system
Improves steady state behavior of the system
Improves steady state behavior and speeds up the transient response of the system
Improves steady state behavior and preserves the transient response of the system
Explanation:-
Answer: Option D. ->
Improves steady state behavior and preserves the transient response of the system
Question 8.
A lead compensator
Speeds up the transient response
Increases the stability margin
Increases the stability margin and speeds up the transient-response.
None of the above
Explanation:-
Answer: Option C. ->
Increases the stability margin and speeds up the transient-response.
Question 9.
Robotic manipulator arms mostly use
Hydraulic actuator
Pneumatic actuator
Electric motor actuator
None of the above
Explanation:-
Answer: Option C. ->
Electric motor actuator
Question 10.
In bode plots the frequency at which two asymptotes meet is called corner frequency.
True
False
Motor friction and load
Field resistance
Explanation:-
Answer: Option A. ->
True
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