IndiaBIX

Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 9
16.
If damping ratio is 0.5, the lines joining complex poles with origin are inclined to negative real axis at
± 90°
± 60°
± 45°
± 30°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
At corner frequency the phase angle of factor is - 45°
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A system has two poles as shown in the given figure. The zeros are at infinity. If input is unit step, the steady state output is
1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
A unity feedback system has the following open loop frequency response

The gain margin and phase margin are
0 dB, -17°
3.86 dB, -180°
0 dB, 10°
3.86 dB, 10°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The permanent magnet field system of brushless dc servo- motor is generally on
stator
rotor
partly on stator and partly on rotor
either (a) or (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers