Question

Consider the following statements:

The gain margin and phase margin of an unstable system may respectively be

1. positive, positive
2. positive, negative
3. negative, positive
4. negative, negative

Of these statements

a.

1, 4 are correct

b.

1 and 2 correct

c.

1, 2, 3 are correct

d.

2, 3, 4 are correct

Answer: (d).2, 3, 4 are correct

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. Consider the following statements: The gain margin and phase margin of an unstable system may respectively be 1. positive, positive 2. positive, negative 3. negative,...

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. A first order element yields almost exact duplication only for constant or slowly varying phenomenon.

Q. For a stable system

Q. If G(s)H(s) = K/s²(s²+2s+2), the angle of departure of root locus at s = - 1 + j is

Q. Accurate amplitude measurements can be made more easily than accurate phase shift measurements.

Q. A synchro transmitter receiver unit is a

Q. The transfer function of transportation lag is

Q. As the bandwidth increases, the cost of components

Q. If Nyquist plot has a encirclement of (-1 + jo) point, the system is stable if

Q. A conditionally stable system has

Q. In a pneumatic bellows

Q. Assertion (A): A large negative feedback is deliberately introduced in an amplifier to make its gain independent of variation in parameters of active device.

Reason (R): A large negative value of feedback results in a high value of return difference compared to unity which makes the feedback gain inversely proportional to the feedback factor.

Q. An electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis is

Q. Assertion (A): If the Laplace transform is G(s) = 4/(s²+2s+4), the Laplaces transform of impulse response is given by C(s) = 4/(s²+2s+4)

Reason (R): The Laplace transform for an impulse function is 1.

Q. The polar plot of G(jω) = 1/jω is the negative imaginary axis.

Q. The number of branches of root locus plot is equal to

Q. The action of bellows is similar to that of

Q. For a second order system ωn is natural frequency, ωd is frequency of damped oscillations and ζ is damping factor. Then

Q. In force voltage analogy the quantity analogous to spring constant K is

Q. The log magnitude curve of factor jω is a straight line having a slope of 20 dB/decade.

Q. Time rate of change in heat energy is analogous to

Recommended Subjects

Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!