Test: Nyquist Plot - 1 - Electrical Engineering (EE) MCQ

# Test: Nyquist Plot - 1 - Electrical Engineering (EE) MCQ

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## 10 Questions MCQ Test GATE Electrical Engineering (EE) Mock Test Series 2025 - Test: Nyquist Plot - 1

Test: Nyquist Plot - 1 for Electrical Engineering (EE) 2024 is part of GATE Electrical Engineering (EE) Mock Test Series 2025 preparation. The Test: Nyquist Plot - 1 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Nyquist Plot - 1 MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Nyquist Plot - 1 below.
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Test: Nyquist Plot - 1 - Question 1

### In polar plots, what does each and every point represent w.r.t magnitude and angle?

Detailed Solution for Test: Nyquist Plot - 1 - Question 1

Each and every point on the polar plot is the phasor where value of frequency varies.

Test: Nyquist Plot - 1 - Question 2

### Due to an addition of pole at origin, the polar plot gets shifted by ___ at ω = 0?

Detailed Solution for Test: Nyquist Plot - 1 - Question 2

Addition of pole causes instability to the system.

Test: Nyquist Plot - 1 - Question 3

### Consider the system represented by the equation given below. What would be the total phase value at ω = 0? 200/[s3 (s + 3) (s + 6) (s + 10)].

Detailed Solution for Test: Nyquist Plot - 1 - Question 3

The phase can be calculated by the basic formula for calculating phase angle.

Test: Nyquist Plot - 1 - Question 4

In polar plots, if a pole is added at the origin, what would be the value of the magnitude at Ω = 0?

Detailed Solution for Test: Nyquist Plot - 1 - Question 4

Addition of pole causes instability to the system.

Test: Nyquist Plot - 1 - Question 5

Which principle specifies the relationship between enclosure of poles & zeros by s-plane contour and the encirclement of origin by q(s) plane contour?

Detailed Solution for Test: Nyquist Plot - 1 - Question 5

Argument principle specifies the relationship between enclosure of poles & zeros by s-plane contour and the encirclement of origin by q(s) plane contour.

Test: Nyquist Plot - 1 - Question 6

According to Nyquist stability criterion, where should be the position of all zeros of q(s) corresponding to s-plane?

Detailed Solution for Test: Nyquist Plot - 1 - Question 6

According to Nyquist stability criterion zeroes must lie on the left half on the s plane.

Test: Nyquist Plot - 1 - Question 7

Consider a feedback system with gain margin of about 30. At what point does Nyquist plot crosses negative real axis?

Detailed Solution for Test: Nyquist Plot - 1 - Question 7

Gain Margin is always inverse of the point which cuts the Nyquist on the real axis.

Test: Nyquist Plot - 1 - Question 8

If a Nyquist plot of G (jω) H (jω) for a closed loop system passes through (-2, j0) point in GH plane, what would be the value of gain margin of the system in dB?

Detailed Solution for Test: Nyquist Plot - 1 - Question 8

Gain Margin is calculated by taking inverse of the gain where the Nyquist plot cuts the real axis.

Test: Nyquist Plot - 1 - Question 9

For Nyquist contour, the size of radius is _______

Detailed Solution for Test: Nyquist Plot - 1 - Question 9

For Nyquist contour, the size of radius is ∞.

Test: Nyquist Plot - 1 - Question 10

If the system is represented by G(s) H(s) = k (s+7) / s (s +3) (s + 2), what would be its magnitude at ω = ∞?

Detailed Solution for Test: Nyquist Plot - 1 - Question 10

On calculating the magnitude of the system and putting the value of frequency one gets the magnitude as 0.

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