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Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is
0.167
0.2
6/5
5
0.167
0.2
6/5
5
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
F(s)/(s+a)
e-as*F(s)
F(s+a)
eas*F(s)
F(s)/(s+a)
e-as*F(s)
F(s+a)
eas*F(s)
Answer
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Control Systems
Force balancing equation of a mass element is (where, x = displacement)
M d2x/dt2
any of the above
M *x
M dx/dt
M d2x/dt2
any of the above
M *x
M dx/dt
Answer
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Control Systems
What is the open loop DC gain of a unity feedback control system having closed loop transfer function as
4/9
13/4
9/4
4/13
4/9
13/4
9/4
4/13
Answer
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Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?
0
4
2
1
0
4
2
1
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?
1
4
0.5
2
1
4
0.5
2
Answer
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