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ESE-2018 Electrical Engineering Quiz 10
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Question 1
Consider the feedback control system shown below which is subjected to a unit step input. The system is stable and has the following parameters kP = 4, ki = 10, ω = 500 and ξ = 0.7.
The steady state value of z is
The steady state value of z is
Question 2
As shown in the figure, a negative feedback system has an amplifier of gain 100 with ±10% tolerance in the forward path, and an attenuator of value 9/100 in the feedback path. The overall system gain is approximately:
Question 3
In an analog signal, if a variant x(t) = cos (2500πt) is sampled with the frequency fs of 1 kHz, in time T be 1ms. What will be the value of the discrete signal x(n), when the angle frequency is ω ε[0, π].
Question 4
The open-loop Transfer Function of a dc motor is given as 
. When connected in feedback as shown below, the approximate value of Ka that will reduce the time constant of the closed loop system by one hundred times as compared to that of the open-loop system is
Question 5
Which is correct about control system block diagram?
Question 6
For the signal-flow graph shown in the figure, which one of the following expressions is equal to the transfer function 
?
? Question 7
A two-loop position control system is shown below.
The gain k of the Tacho-generator influences mainly the
The gain k of the Tacho-generator influences mainly the
Question 8
Which one of the following is an advantage of a PD controller in terms of damping (
) and natural frequency (ωn)?
) and natural frequency (ωn)? - 428 attempts
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Feb 18ESE & GATE EE
