1) For Nyquist contour, the size of radius is _______
a. 25
b. 0
c. 1
d. ∞
|
Answer
Explanation
|
ANSWER: ∞
Explanation:
No explanation is available for this question!
|
|
2) 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 = ∞?
a. 0
b. ∞
c. 7/10
d. 21
|
Answer
Explanation
|
ANSWER: 0
Explanation:
No explanation is available for this question!
|
|
3) 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?
a. 0 dB
b. 2.0201 dB
c. 4 dB
d. 6.0205 dB
|
Answer
Explanation
|
ANSWER: 6.0205 dB
Explanation:
No explanation is available for this question!
|
|
4) 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)]
a. -90°
b. -180°
c. -270°
d. -360°
|
Answer
Explanation
|
ANSWER: -270°
Explanation:
No explanation is available for this question!
|
|
5) Consider a feedback system with gain margin of about 30. At what point does Nyquist plot crosses negative real axis?
a. -3
b. -0.3
c. -30
d. -0.03
|
Answer
Explanation
|
ANSWER: -0.3
Explanation:
No explanation is available for this question!
|
|
6) Which principle specifies the relationship between enclosure of poles & zeros by s-plane contour and the encirclement of origin by q(s) plane contour?
a. Argument
b. Agreement
c. Assessment
d. Assortment
|
Answer
Explanation
|
ANSWER: Argument
Explanation:
No explanation is available for this question!
|
|
7) According to Nyquist stability criterion, where should be the position of all zeros of q(s) corresponding to s-plane?
a. On left half
b. At the center
c. On right half
d. Random
|
Answer
Explanation
|
ANSWER: On left half
Explanation:
No explanation is available for this question!
|
|
8) Due to an addition of pole at origin, the polar plot gets shifted by ___ at ω = 0?
a. -45°
b. -60°
c. -90°
d. -180°
|
Answer
Explanation
|
ANSWER: -90°
Explanation:
No explanation is available for this question!
|
|
9) In polar plots, if a pole is added at the origin, what would be the value of the magnitude at Ω = 0?
a. Zero
b. Infinity
c. Unity
d. Unpredictable
|
Answer
Explanation
|
ANSWER: Infinity
Explanation:
No explanation is available for this question!
|
|
10) In polar plots, what does each and every point represent w.r.t magnitude and angle?
a. Scalar
b. Vector
c. Phasor
d. Differentiator
|
Answer
Explanation
|
ANSWER: Phasor
Explanation:
No explanation is available for this question!
|
|
