IndiaBIX

Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 7
6.
The frequency at which phase angle is 180° is called
phase crossover frequency
stability limit frequency
frequency of limited stability
gain margin frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
In a mechanical accelerometer, the steady state displacement is a measure of
constant input acceleration
constant input velocity
either (a) or (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
A unity feedback system has . If input r(t) = 1 + 2t + t3, the steady error is
zero
0.4
4
infinity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.

Assertion (A): The root locus of a control system is symmetrical about real axis.

Reason (R): For all polynomials with real coefficients, complex poles always occur in conjugate pairs.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
R is correct but A is wrong
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
In log magnitude Bode diagram the slope of high frequency asymptote of (1 + jωT) is
20 dB per decade
10 dB per decade
20 dB per octave
10 dB per octave
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers