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Control Systems

Control Systems
The transfer function for tachometer E(S)/θ(S) is

 K/S
 KS
 K
 KS2

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Control Systems
A box which tells the effect of inputs on control sub system is known as

 State box.
 Decision box.
 Logical box.
 Data Box.

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Control Systems
Electrical analogous quantity for dash-pot in force-current analogy is

 resistance.
 inductance.
 capacitance.
 conductance.

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Control Systems
The transfer functions of two compensators are given below. Which one is correct? which one is correct?

  C1 is a lag compensator and C2 i
  Both C1 and C2 are lag compensator.
  Both C1 and C2 are lead compensator.
  C1 is a lead compensator and C2 i

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 both 1 and 3
 tan-1((1 - α)/(2√α)
 sin-1((1 - α)/(1 + α)
 cos-1((1 - α)/(1 + α)

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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-t.
 etu(t).
 e-tu(t).

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