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Control Systems

Control Systems
What is the type of closed loop system for the plant transfer function G(s) = k/s²(1+Ts) and with unity feedback?

 2
 3
 0
 1

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Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is

 0.693.
 1.386.
 2.000.
 0.500.

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Control Systems
Electrical analogous quantity for spring element (K) in force-voltage analogy is

 1/C
 C
 R
 L

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Control Systems
The open loop transfer function of non unity negative feedback system is , then the number of root locus branches equal to

 2.
 1.
 0.
 3.

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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).
 e-t.
 etu(t).

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Control Systems
Find the type of the system given by

 2.
 3.
 4.
 1.

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