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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become
zero
unity
0.707
infinite
zero
unity
0.707
infinite
Answer
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Related Question
Control Systems
When compared to a 1st order LPF, a 2nd order LPF has
higher voltage gain.
lower voltage gain.
faster drop in filter response.
higher cut off frequency.
higher voltage gain.
lower voltage gain.
faster drop in filter response.
higher cut off frequency.
Answer
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Control Systems
Which one of the following is the response y(t) of a casual LTI system described by H(s) = (s+1)/(s²+2s+2) for a given input x(t) = e-t u(t)?
e-t sint*u(t)
e-t cott*u(t)
e-t tant*u(t)
e-t cost*u(t)
e-t sint*u(t)
e-t cott*u(t)
e-t tant*u(t)
e-t cost*u(t)
Answer
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Control Systems
For a transfer function H (s) = P(s) / Q(s), where P (s) and Q (s) are polynomials in s. Then
maximum degree of P (s) and Q (s) differ at most by one.
degree of P (s) is independent of degree of Q (s).
the degree of P (s) is always greater than the degree of Q (s).
the degree of P (s) and Q (s) are same.
maximum degree of P (s) and Q (s) differ at most by one.
degree of P (s) is independent of degree of Q (s).
the degree of P (s) is always greater than the degree of Q (s).
the degree of P (s) and Q (s) are same.
Answer
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Control Systems
Which of the following combinations is/are correct electrical analogous elements in force-current analogy?
Velocity (v) ----------------- Voltage (V)
Force (f) --------------------- Current (i)
All of these
Spring element (K) --------- Inverse inductance (1/L)
Velocity (v) ----------------- Voltage (V)
Force (f) --------------------- Current (i)
All of these
Spring element (K) --------- Inverse inductance (1/L)
Answer
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Control Systems
The magnitude condition for root locus is ..................
|G(s)H(s)| = ∞
|G(s)H(s)| = 2
|G(s)H(s)| = 1
|G(s)H(s)| = 0
|G(s)H(s)| = ∞
|G(s)H(s)| = 2
|G(s)H(s)| = 1
|G(s)H(s)| = 0
Answer
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