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Control Systems
Lowest critical frequency is due to pole and it may be present at the origin or nearer to the origin, then the type of network is
Any of the above.
RC.
RL.
LC.
Any of the above.
RC.
RL.
LC.
Answer
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Control Systems
Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to
eas*F(s)
F(s+a)
F(s)/(s+a)
e-as*F(s)
eas*F(s)
F(s+a)
F(s)/(s+a)
e-as*F(s)
Answer
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Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?
0.5
4
1
2
0.5
4
1
2
Answer
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Control Systems
Given a unity feedback system with G(s) = k/s(s+4), the value of k for damping ratio of 0.5 is
16
1
4
64
16
1
4
64
Answer
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Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)
B d2x/dt2
B *x
B dx/dt
None of these
B d2x/dt2
B *x
B dx/dt
None of these
Answer
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Control Systems
The open loop transfer function for unity feedback system is given by 5(1+0.1s) / (s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to
infinite.
zero.
5.
2.
infinite.
zero.
5.
2.
Answer
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