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Control Systems

Control Systems
The closed loop transfer function of a unity feedback control system is 9/(s² + 3s + 9), then the type of the system is

 3
 2
 1
 0

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Control Systems
In which of the following controller band width is increased?

 nether 1 nor 2
 proportional plus integral controller
 proportional plus derivative controller
 both 1 and 2

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Control Systems
Which of the following combinations is/are correct electrical analogous elements in force-current analogy?

All of these
 Velocity (v) ----------------- Voltage (V)
 Force (f) --------------------- Current (i)
 Spring element (K) --------- Inverse inductance (1/L)

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Control Systems
Transfer function of zero order hold response is

 (s) × (1 - est).
 (1 / s) × (1 - e-st).
 (1 / s) × (1 - est).
 (1 / s) × e-st.

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Control Systems
The open loop transfer function for unity feedback system is given by Find the steady state error for a ramp input of magnitude 10?

 0
 2
 5
 infinite

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Control Systems
A function y (t) satisfies the following differential equation : Where, δ (t) is the delta function. Assuming zero initial condition and denoting the unit step function by u(t), y(t) can be formed as

 et.
 e-tu(t).
 etu(t).
 e-t.

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