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Test: Frequency Domain Analysis of Control Systems


10 Questions MCQ Test Control Systems | Test: Frequency Domain Analysis of Control Systems


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This mock test of Test: Frequency Domain Analysis of Control Systems for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 10 Multiple Choice Questions for Electrical Engineering (EE) Test: Frequency Domain Analysis of Control Systems (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Frequency Domain Analysis of Control Systems quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Test: Frequency Domain Analysis of Control Systems exercise for a better result in the exam. You can find other Test: Frequency Domain Analysis of Control Systems extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

The Bode diagram approach is the most commonly used method for the analysis and synthesis of

Solution:
QUESTION: 2

Nichol's chart is a plot of

Solution:
QUESTION: 3

The initial slope of Bode plot for a transfer function having no poles at origin is

Solution:

With no-pole at origin, initial slope will be OdB/decade.
For n-pole at origin, initial slope will be -20 ndB/decade.

QUESTION: 4

The gain margin of a control system having the loop transfer function G(s)H(s) = 
Solution:


QUESTION: 5

Gain crossover frequency is the frequency at which the gain of G(jω) is
Solution:

QUESTION: 6

For a control system having gain margin of -10 dB, the magnitude of GH(s) for 180° phase shift is
Solution:


QUESTION: 7

If the Nyquist plot of the loop transfer function G(s)H(s) of a closed-loop system does not encloses the (-1, j0) point in the G(s)H(s) plane, the gain margin of the system will be
Solution:

Since the critical point (-1 + j0 ) is not enclosed, therefore m agnitude of OLTF,  will be less than unity.
Therefore, G.M. = 20 log  will be positive and the system will be stable.

QUESTION: 8

A system with phase margin close to zero or gain margin close to unity is 
Solution:
QUESTION: 9

If the transfer function of a first-order system in  then the time constant of this system will be
Solution:


Hence, time constant = T= 5 seconds

QUESTION: 10

The polar plot of  
Solution:


Given system is of type-1 and order-2, therefore its polar plot will be as shown below.

Hence, the polar plot will neither cross the real axis nor the imaginary axis.

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