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Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 6
31.
For a second order system delay time td is the time required to reach
half the final value for the very first time
the final value for the very first time
90% of the final value for the very first time
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Coulomb friction is
the force of sliding friction between dry surfaces
the force of friction between moving surfaces separated by viscous fluid
the force required to initiate motion between two contacting surfaces
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
A feedback amplifier has forward gains A1, A2 and feedback factor β as shown in signal flow graph of the given figure. Because of feedback as shown in signal noise ratio at output will
increase
decrease
be unaffected
depend on value of β
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
For the system in the given figure . Then steady state error is
K
Zero
1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
The damping ratio of a pair of complex poles when expressed in terms of angle θ measured from jω axis equal to
sin θ
cos θ
tan θ
cot θ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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